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Barron JO, Ramji S, Nemoyer R, Tappuni S, Toth AJ, Tasnim S, Sudarshan M, Murthy SC, Blackstone EH, Raja S. Paraconduit hernia following esophagectomy: Is it safe to watch and wait? J Thorac Cardiovasc Surg 2024; 167:1628-1637.e2. [PMID: 37673124 DOI: 10.1016/j.jtcvs.2023.08.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 08/07/2023] [Accepted: 08/27/2023] [Indexed: 09/08/2023]
Abstract
OBJECTIVES We hypothesized that emergency complications related to asymptomatic paraconduit hernias may occur less often than generally believed. Therefore, we assessed the occurrence and timing of paraconduit hernia diagnosis after esophagectomy, as well as outcomes of these asymptomatic patients managed with a watch-and-wait approach. METHODS From 2006 to 2021, 1214 patients underwent esophagectomy with reconstruction at the Cleveland Clinic. Among these patients, computed tomography scans were reviewed to identify paraconduit hernias. Medical records were reviewed for timing of hernia diagnosis, hernia characteristics, and patient symptoms, complications, and management. During this period, patients with asymptomatic paraconduit hernias were typically managed nonoperatively. RESULTS Paraconduit hernias were identified in 37 patients. Of these, 31 (84%) had a pre-esophagectomy hiatal hernia. Twenty-one hernias (57%) contained colon, 7 hernias (19%) contained pancreas, and 9 hernias (24%) contained multiple organs. Estimated prevalence of paraconduit hernia was 3.3% at 3 years and 7.7% at 10 years. Seven patients (19%) had symptoms, 4 of whom were repaired electively, with 2 currently awaiting repairs. No patient with a paraconduit hernia experienced an acute complication that required emergency intervention. CONCLUSIONS The risk of paraconduit hernia increases with time, suggesting that long-term symptom surveillance is reasonable. Emergency complications as a result of asymptomatic paraconduit hernias are rare. A small number of patients will experience hernia-related symptoms, sometimes years after hernia diagnosis. Our findings suggest that observation of asymptomatic paraconduit hernias (watch and wait) may be considered, with repair considered electively in patients with persistent symptoms.
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Affiliation(s)
- John O Barron
- Department of Thoracic and Cardiovascular Surgery, Heart, Vascular, and Thoracic Institute, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Sadhvika Ramji
- Department of Thoracic and Cardiovascular Surgery, Heart, Vascular, and Thoracic Institute, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Rachel Nemoyer
- Department of Thoracic and Cardiovascular Surgery, Heart, Vascular, and Thoracic Institute, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Shahed Tappuni
- Department of Thoracic and Cardiovascular Surgery, Heart, Vascular, and Thoracic Institute, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Andrew J Toth
- Department of Quantitative Health Sciences, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Sadia Tasnim
- Department of Thoracic and Cardiovascular Surgery, Heart, Vascular, and Thoracic Institute, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Monisha Sudarshan
- Department of Thoracic and Cardiovascular Surgery, Heart, Vascular, and Thoracic Institute, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Sudish C Murthy
- Department of Thoracic and Cardiovascular Surgery, Heart, Vascular, and Thoracic Institute, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Eugene H Blackstone
- Department of Thoracic and Cardiovascular Surgery, Heart, Vascular, and Thoracic Institute, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Siva Raja
- Department of Thoracic and Cardiovascular Surgery, Heart, Vascular, and Thoracic Institute, Cleveland Clinic Foundation, Cleveland, Ohio.
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Celtik U, Dokumcu Z, Ozcan C, Ergün O. A rare complication of pediatric liver transplantation: Post-transplant diaphragmatic hernia. Pediatr Transplant 2024; 28:e14749. [PMID: 38623878 DOI: 10.1111/petr.14749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 02/21/2024] [Accepted: 03/15/2024] [Indexed: 04/17/2024]
Abstract
AIM Acquired post-transplant diaphragmatic hernia (PTDH) is a rare complication of liver transplantation (LT) in children. We aimed to present our experience in PTDH, and a possible causative background is discussed. METHODS Medical records of patients who had undergone diaphragmatic repair following LT between 2015 and 2023 were reviewed. Demographic information, details of primary diseases necessitating LT, transplantation techniques, and clinical findings associated with PTDH were evaluated. RESULTS There were seven patients with PTDH. Median age at transplantation was 69 (range: 9-200) months. Five patients received a left lateral sector, one patient had a right lobe, and one had a left lobe graft. Time between LT and PTDH was 9 (2-123) months. One patient who was diagnosed in the postoperative 10th year was asymptomatic. Respiratory distress and abdominal pain were the main symptoms among all. All patients underwent laparotomy, and primary repair was performed in six patients, and one patient required mesh repair because of a large defect. Small intestine herniated in most cases. There were two complicated cases with perforation of the stomach and colonic volvulus. There is no recurrence or long-term complications for the median 60 (20-119) month follow-up period. CONCLUSION PTDH is a rare but serious complication. Majority of symptomatic cases present within the first postoperative year, whereas some late-presenting cases may not be symptomatic. Inadvertent injury to the inferior phrenic vasculatures due to excessive use of cauterization for control of hemostasis may be a plausible explanation in those cases.
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Affiliation(s)
- Ulgen Celtik
- Department of Pediatric Surgery, Ege University Faculty of Medicine, İzmir, Turkey
| | - Zafer Dokumcu
- Department of Pediatric Surgery, Ege University Faculty of Medicine, İzmir, Turkey
| | - Coskun Ozcan
- Department of Pediatric Surgery, Ege University Faculty of Medicine, İzmir, Turkey
| | - Orkan Ergün
- Department of Pediatric Surgery, Ege University Faculty of Medicine, İzmir, Turkey
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Yang J, Liang Q, Han L, Wang Y, Guo Y. Primary intraorbital inflammatory lumpy lesion: A rare case report. Medicine (Baltimore) 2024; 103:e37869. [PMID: 38640264 PMCID: PMC11029932 DOI: 10.1097/md.0000000000037869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 03/03/2024] [Accepted: 03/21/2024] [Indexed: 04/21/2024] Open
Abstract
RATIONALE Eosinophilic angiocentric fibrosis (EAF) is considered to be a kind of benign IgG4-related disease, and it is more often found in the nasal cavity. We present a pretty rare case of orbital EAF that is unlike any other reported case for this case is an IgG4 negative orbital EAF and successfully treated by the fronto orbitozygomatic approach surgery. PATIENT CONCERNS This is a 68-year-old man from a rural area of Inner Mongolia Autonomous Region, went to our hospital for a 2-month history of vision loss with a local hospital orbital computer tomography which showed that there was a lesion in his left orbit. The inspection of the patient revealed that the patient left eye was protruding outward and the left eyelid unable to complete open or close. And his left eyeball movement had difficulty in all directions. Postoperative pathology diagnosed that this was a case of IgG4-negative EAF case. DIAGNOSES Orbital EAF. INTERVENTIONS Surgical radical resection and postoperative glucocorticoid therapy. OUTCOMES After surgery, the left eye vision of this patient increased to 0.6 tested in the standard logarithmic visual acuity chart. And his left eyeball movement dysfunction and eyeball outward protruding get a partially relief. LESSONS EAF occurring in the orbit is a very rare disease and immunohistochemical results of EAF can be IgG4 negative.
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Affiliation(s)
- Jinxin Yang
- Department of Neurosurgery, The Second Hospital of Jilin University, Changchun, China
| | - Qianlei Liang
- Department of Neurosurgery, Chian-Japan Union Hospital of Jilin University, Changchun, China
| | - Liang Han
- Department of Pathology, Chian-Japan Union Hospital of Jilin University, Changchun, China
| | - Yan Wang
- Department of Pathology, Chian-Japan Union Hospital of Jilin University, Changchun, China
| | - Yongchuan Guo
- Department of Neurosurgery, The Second Hospital of Jilin University, Changchun, China
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Cartwright S, Gordon M, Shank J, Fingeret A. Imaging Concordance With Vein Sampling for Primary Aldosteronism: A Cohort Study and Literature Review. J Surg Res 2024; 296:1-9. [PMID: 38181643 DOI: 10.1016/j.jss.2023.11.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 10/10/2023] [Accepted: 11/12/2023] [Indexed: 01/07/2024]
Abstract
INTRODUCTION Adrenal venous sampling (AVS) is used to distinguish unilateral from bilateral aldosterone hypersecretion as a cause of primary aldosteronism (PA). Unilateral disease is treated with adrenalectomy and bilateral hypersecretion managed medically. METHODS We performed a single institution retrospective cohort study of adult patients undergoing adrenalectomy for PA from July 2013 to June 2022. Concordance of imaging findings with AVS was evaluated. Statistical analysis was performed with Mann-Whitney U and chi-squared Fisher's exact. Literature review performed via triple method search strategy. RESULTS Twenty-one patients underwent AVS and adrenalectomy for PA. Two patients did not have imaging findings and 19 were localized with an adenoma. For patients with image localization, AVS was concordant in nine, discordant in four, and nondiagnostic in six. For patients with discordant findings, age range was 35.8 to 72.4 y compared with concordant patient age range of 49.8 to 71.7 y. Overall discordance between imaging results and AVS was 40%. The aldosterone level was associated with concordance with a median of 52 ng/dL compared with 26 ng/dL if discordant (P = 0.002). There was a significant reduction in antihypertensive medications for the entire cohort from a median of three medications (interquartile range 2-4) to 1 medication (interquartile range 1-2), P < 0.001. CONCLUSIONS In this cohort, 40% of patients with selective AVS had discordant imaging and AVS results. Aldosterone level was associated with concordance. Hypertension was significantly improved with a median decrease of two antihypertensives. Our results support performance of AVS on all candidates for adrenalectomy for PA.
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Affiliation(s)
- Sara Cartwright
- Department of Surgery, College of Medicine, University of Nebraska Medical Center, Omaha, NE
| | - MaKayla Gordon
- Department of Surgery, College of Medicine, University of Nebraska Medical Center, Omaha, NE
| | - Jessica Shank
- Department of Surgery, College of Medicine, University of Nebraska Medical Center, Omaha, NE
| | - Abbey Fingeret
- Department of Surgery, College of Medicine, University of Nebraska Medical Center, Omaha, NE.
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Saha D, Tai R, Kapare V, Joshi G. Multifocal emphysematous osteomyelitis, a do not miss diagnosis for the emergency radiologist: a case report with literature review. Emerg Radiol 2024; 31:285-288. [PMID: 38267799 DOI: 10.1007/s10140-024-02203-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 01/10/2024] [Indexed: 01/26/2024]
Abstract
Emphysematous osteomyelitis (EO) is an uncommon fatal condition with high morbidity and mortality. Simultaneous involvement of the axial and appendicular skeleton with multifocal disease is even rarer, with only a few cases being reported in the literature. We present a case of multifocal emphysematous osteomyelitis in a 56-year-old woman with concurrent emphysematous pyelonephritis complicated by psoas and epidural abscesses. The causative organism in our patient was Escherichia coli. Emergency radiologists should be aware of this condition and differentiate it from other benign entities that can present with intraosseous gas. Prompt diagnosis is important given the high morbidity and mortality with this condition. This case report emphasizes the specific pattern of intraosseous gas seen with EO, which can help diagnose EO with confidence.
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Affiliation(s)
- Debajyoti Saha
- Department of Radiology Chan Medical School, University of Massachusetts, UMass Memorial Medical Center, 55 Lake Avenue North, Worcester, MA, 0165, USA.
| | - Ryan Tai
- Department of Radiology Chan Medical School, University of Massachusetts, UMass Memorial Medical Center, 55 Lake Avenue North, Worcester, MA, 0165, USA
| | - Vaishali Kapare
- Department of Radiology Chan Medical School, University of Massachusetts, UMass Memorial Medical Center, 55 Lake Avenue North, Worcester, MA, 0165, USA
| | - Ganesh Joshi
- Department of Radiology Chan Medical School, University of Massachusetts, UMass Memorial Medical Center, 55 Lake Avenue North, Worcester, MA, 0165, USA
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El Tawil C, Nemeth J, Al Sawafi M. Pediatric Blunt Cerebrovascular Injuries: Approach and Management. Pediatr Emerg Care 2024; 40:319-322. [PMID: 37159384 DOI: 10.1097/pec.0000000000002967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
ABSTRACT The low incidence of blunt cerebrovascular injury (BCVI) reported in pediatric studies (<1%) might be related to an underreporting due to both the absence of current screening guidelines and the use of inadequate imaging techniques. This research is a review of the literature limited to the last 5 years (2017-2022) about the approach and management of BCVI in pediatrics. The strongest predictors for BCVI were the presence of basal skull fracture, cervical spine fracture, intracranial hemorrhage, Glasgow Coma Scale score less than 8, mandible fracture, and injury severity score more than 15. Vertebral artery injuries had the highest associated stroke rate of any injury type at 27.6% (vs 20.1% in carotid injury). The sensitivity of the well-established screening guidelines of BCVI varies when applied to the pediatric population (Utah score - 36%, 17%, Eastern Association for the Surgery of Trauma (EAST) guideline - 17%, and Denver criteria - 2%). A recent metaanalysis of 8 studies comparing early computed tomographic angiogram (CTA) to digital subtraction angiography for BCVI detection in adult trauma patients demonstrated high variability in the sensitivity and specificity of CTA across centers. Overall, CTA was found to have a high specificity but low sensitivity for BCVI. The role of antithrombotic as well as the type and duration of therapy remain controversial. Studies suggest that systemic heparinization and antiplatelet therapy are equally effective.
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Affiliation(s)
- Chady El Tawil
- From the Department of Emergency Medicine, Montreal Children's Hospital, McGill University Health Centre, Montreal, Quebec, Canada
| | - Joe Nemeth
- McGill University Health Center, Montreal General Hospital, Montreal Children's Hospital, Montreal, Quebec, Canada
| | - Muzna Al Sawafi
- Montreal General Hospital, McGill University, Montreal, Quebec, Canada
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Zhao M, Zhang B, Shi J, Tang X, Li H, Li S, Yang Y, Han Y, Wang R, Xun J, Zhang K, Wu X, Zhao J. HCC portal hypertension imaging score derived from CT predicts re-bleeding and mortality after acute variceal bleeding. Cancer Imaging 2024; 24:45. [PMID: 38549132 PMCID: PMC10976815 DOI: 10.1186/s40644-024-00689-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 03/11/2024] [Indexed: 04/02/2024] Open
Abstract
BACKGROUND/PURPOSE Risk factors for re-bleeding and death after acute variceal bleeding (AVB) in cirrhotic HCC patients are not fully understood.We aimed to (1) explore how the combination of high-risk esophageal varices, HCC status, and portal vein tumor thrombus (i.e., HCC Portal Hypertension Imaging Score [HCCPHTIS]) helps predict increased risk of variceal re-bleeding and mortality; (2) assess predictability and reproducibility of the identified variceal re-bleeding rules. METHODS This prospective study included 195 HCC patients with first-time AVB and liver cirrhosis, and conducted multivariable Cox regression analysis and Kaplan-Meier analysis. Receiver operating characteristic curve analysis was calculated to find the optimal sensitivity, specificity, and cutoff values of the variables. The reproducibility of the results obtained was verified in a different but related group of patients. RESULTS 56 patients (28.7%) had re-bleeding within 6 weeks; HCCPHTIS was an independent risk factor for variceal re-bleeding after AVB (Odd ratio, 2.330; 95% confidence interval: 1.728-3.142, p < 0.001). The positive predictive value of HCCPHTIS cut off value > 3 was 66.2%, sensitivity 83.9%, and specificity 82.3%. HCCPHTIS area under the curve was higher than Child-Pugh score (89% vs. 75%, p < 0.001). 74(37.9%) death occurred within 6 weeks; HCCPHTIS > 4 was associated with increased risk of death within 6 weeks after AVB (p < 0.001). CONCLUSION HCCPHTIS > 3 is a strong predictor of variceal re-bleeding within the first 6 weeks. However, patients with HCCPHTIS > 4 were at increased risk of death within 6 weeks.
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Affiliation(s)
- Mingyuan Zhao
- Department of Oncology, Shanxi Provincial People's Hospital, Affiliated to Shanxi Medical University, Taiyuan, 030012, China
| | - Binyue Zhang
- Department of surgery, Shanxi Medical University, Taiyuan, 030001, China
| | - Jianqiang Shi
- Department of Radiology, Shanxi Provincial People's Hospital, Affiliated to Shanxi Medical University, Taiyuan, 030012, China
| | - Xiaoxian Tang
- Department of Radiology, Shanxi Provincial People's Hospital, Affiliated to Shanxi Medical University, Taiyuan, 030012, China
| | - Hongxia Li
- Department of Oncology, Shanxi Provincial People's Hospital, Affiliated to Shanxi Medical University, Taiyuan, 030012, China
| | - Shengwen Li
- Department of Oncology, Shanxi Provincial People's Hospital, Affiliated to Shanxi Medical University, Taiyuan, 030012, China
| | - Yunfeng Yang
- Department of Hepatology, Shanxi Provincial People's Hospital, Affiliated to Shanxi Medical University, 99 Shuang Ta street, Taiyuan, 030012, China
| | - Yi Han
- Department of Hepatology, Shanxi Provincial People's Hospital, Affiliated to Shanxi Medical University, 99 Shuang Ta street, Taiyuan, 030012, China
| | - Rong Wang
- Department of Hepatology, Shanxi Provincial People's Hospital, Affiliated to Shanxi Medical University, 99 Shuang Ta street, Taiyuan, 030012, China
| | - Jian Xun
- Department of Hepatology, Taiyuan No.3 Hospital Affiliated to Shanxi Medical University, Taiyuan, 030012, China
| | - Kai Zhang
- Department of Radiology, Taiyuan No.3 Hospital Affiliated to Shanxi Medical University, Taiyuan, 030012, China
| | - Xirun Wu
- Department of Hepatology, Second Hospital of Shanxi Medical University, Taiyuan, 030001, China
| | - Jiang Zhao
- Department of Hepatology, Shanxi Provincial People's Hospital, Affiliated to Shanxi Medical University, 99 Shuang Ta street, Taiyuan, 030012, China.
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Heinonen A, Rauhala M, Isokuortti H, Raj R, Kataja A, Nikula M, Öhman J, Iverson GL, Luoto T. Incidence of surgically treated chronic subdural hematoma after head injury with normal initial computed tomography. Acta Neurochir (Wien) 2024; 166:144. [PMID: 38514587 PMCID: PMC10957655 DOI: 10.1007/s00701-024-06040-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 03/12/2024] [Indexed: 03/23/2024]
Abstract
PURPOSE The objective was to determine the incidence of surgically treated chronic subdural hematoma (cSDH) within six months after head trauma in a consecutive series of head injury patients with a normal initial computed tomography (CT). METHODS A total of 1941 adult patients with head injuries who underwent head CT within 48 h after injury and were treated at the Tampere University Hospital's emergency department were retrospectively evaluated from medical records (median age = 59 years, IQR = 39-79 years, males = 58%, patients using antithrombotic medication = 26%). Patients with no signs of acute traumatic intracranial pathology or any type of subdural collection on initial head CT were regarded as CT negative (n = 1573, 81%). RESULTS Two (n = 2) of the 1573 CT negative patients received surgical treatment for cSDH. Consequently, the incidence of surgically treated cSDH after a normal initial head CT during a six-month follow-up was 0.13%. Both patients sustained mild traumatic brain injuries initially. One of the two patients was on antithrombotic medication (warfarin) at the time of trauma, hence incidence of surgically treated cSDH among patients with antithrombotic medication in CT negative patients (n = 376, 23.9%) was 0.27%. Additionally, within CT negative patients, one subdural hygroma was operated shortly after trauma. CONCLUSION The extremely low incidence of surgically treated cSDH after a normal initial head CT, even in patients on antithrombotic medication, supports the notion that routine follow-up imaging after an initial normal head CT is not indicated to exclude the development of cSDH. Additionally, our findings support the concept of cSDH not being a purely head trauma-related disease.
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Affiliation(s)
- Aaro Heinonen
- The Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, 33520, Tampere, Finland.
| | - Minna Rauhala
- Department of Neurosurgery, Tampere University Hospital, Tampere, Finland
| | - Harri Isokuortti
- Department of Neurosurgery, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Rahul Raj
- Department of Neurosurgery, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Anneli Kataja
- Department of Radiology, Medical Imaging Centre, Tampere University Hospital, Tampere, Finland
| | - Milaja Nikula
- The Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, 33520, Tampere, Finland
| | - Juha Öhman
- Department of Neurosurgery, Tampere University Hospital, Tampere, Finland
| | - Grant L Iverson
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, USA
- Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital and the Schoen Adams Research Institute at Spaulding Rehabilitation, Charlestown, MA, USA
| | - Teemu Luoto
- The Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, 33520, Tampere, Finland
- Department of Neurosurgery, Tampere University Hospital, Tampere, Finland
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Ria F, Rehani MM, Samei E. Characterizing imaging radiation risk in a population of 8918 patients with recurrent imaging for a better effective dose. Sci Rep 2024; 14:6240. [PMID: 38485712 PMCID: PMC10940310 DOI: 10.1038/s41598-024-56516-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 03/07/2024] [Indexed: 03/18/2024] Open
Abstract
An updated extension of effective dose was recently introduced, namely relative effective dose ( E r ), incorporating age and sex factors. In this study we extended E r application to a population of about 9000 patients who underwent multiple CT imaging exams, and we compared it with other commonly used radiation protection metrics in terms of their correlation with radiation risk. Using Monte Carlo methods, E r , dose-length-product based effective dose ( E DLP ), organ-dose based effective dose ( E OD ), and organ-dose based risk index ( RI ) were calculated for each patient. Each metric's dependency to RI was assessed in terms of its sensitivity and specificity. E r showed the best sensitivity, specificity, and agreement with RI (R2 = 0.97); while E DLP yielded the lowest specificity and, along with E OD , the lowest sensitivity. Compared to other metrics, E r provided a closer representation of patient and group risk also incorporating age and sex factors within the established framework of effective dose.
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Affiliation(s)
- Francesco Ria
- Center for Virtual Imaging Trials, Carl E. Ravin Advanced Imaging Labs, Clinical Imaging Physics Group, Departments of Radiology, Duke University Health System, 2424 Erwin Road, Suite 302, Durham, NC, 27710, USA.
| | - Madan M Rehani
- Radiology Department, Massachusetts General Hospital, 175 Cambridge Str. Suite 0244, Boston, USA
| | - Ehsan Samei
- Center for Virtual Imaging Trials, Carl E. Ravin Advanced Imaging Labs, Clinical Imaging Physics Group, Medical Physics Graduate Program, Departments of Radiology, Physics, Biomedical Engineering, and Electrical and Computer Engineering, Duke University, 2424 Erwin Road, Suite 302, Durham, NC, 27710, USA
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Martin CJ, Barnard M, de Vocht F. Evaluation of risks of cardiovascular disease from radiation exposure linked to computed tomography scans in the UK. J Radiol Prot 2024; 44:011513. [PMID: 38422514 DOI: 10.1088/1361-6498/ad2ebd] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 02/29/2024] [Indexed: 03/02/2024]
Abstract
Epidemiological studies of patient populations have shown that high doses of radiation increase risks of cardiovascular disease (CVD). Results from a recent meta-analysis of 93 epidemiological studies covering a wide range of doses provided evidence of a causal association between radiation exposure and CVD, and indicated excess relative risk per Gy for maximum dose below 500 mGy or delivered at low dose rates. These doses cover the range of organ doses expected from multiple diagnostic computed tomography (CT) scans. Dose-effect factors for the excess absolute risk of mortality from CVD following radiation exposure were derived from the meta-analysis. The present study uses these factors to estimate excess risks of mortality for various types of CVD, including cerebrovascular disease (CeVD), from CT scans of the body and head, assuming that the meta-analytic factors were accurate and represented a causal relationship. Estimates are based on cumulative doses to the heart and brain from CT scans performed on 105 574 patients on 12 CT scanners over a period of 5½ years. The results suggest that the excess number of deaths from CeVD could be 7 or 26 per 100 000 patients depending whether threshold brain doses of 200 mGy or 50 mGy, respectively are assumed. These results could have implications for head CT scans. However, the results rely on the validity of risk factors derived in the meta-analysis informing this assessment and which include significant uncertainties. Further incidence studies should provide better information on risk factors and dose thresholds, particularly for CeVD following head CT scans.
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Affiliation(s)
- Colin J Martin
- Department of Clinical Physics and Bioengineering, University of Glasgow, Glasgow, United Kingdom
| | - Michael Barnard
- Department of Radiation Physics and Protection, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Frank de Vocht
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
- NIHR Applied Research Collaboration West (ARC West), Bristol, United Kingdom
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Yang Q, Li B, Sun BJT, Zhong X, Qiu Z, Yang H. The CT-guided percutaneous drainage of pancreatic pseudocyst accompanied by pseudoaneurysm: A case report. Medicine (Baltimore) 2024; 103:e37402. [PMID: 38457581 PMCID: PMC10919489 DOI: 10.1097/md.0000000000037402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 01/31/2024] [Accepted: 02/07/2024] [Indexed: 03/10/2024] Open
Abstract
RATIONALE This case report discusses the CT-guided percutaneous drainage of a pancreatic pseudocyst accompanied by a pseudoaneurysm. Pancreatic pseudocysts can erode the peripancreatic artery and produce pseudoaneurysms. This is rare, but it can be life-threatening. PATIENT CONCERNS The case presented involves a 58-year-old female who was diagnosed with pancreatic cancer and underwent surgical treatment. She presented with hematochezia, dizziness, and hypodynamic findings with no obvious cause. Imaging revealed a pancreatic pseudocyst and small arterial aneurysms. To reduce the risk of aneurysm rupture, the patient underwent transcatheter arterial coil embolization. Three days later, CT-guided catheter drainage was performed to reduce the erosion of the arterial wall caused by pancreatic fluid. DIAGNOSES The contrast-enhanced-CT imaging showed a round, slightly high-density lesion in the cyst, suggesting the presence of a pseudoaneurysm. INTERVENTIONS The patient was sent for another transcatheter arterial embolization with coils and n-butyl-2-cyanoacrylate. OUTCOMES After receiving the transcatheter arterial embolization, the patient had no serious bleeding or other complications. LESSONS Early detection and accurate assessment of pseudoaneurysms are essential for appropriate management. This case shows that contrast-enhanced CT is necessary before CT-guided percutaneous drainage of pancreatic pseudocysts. It also shows that, due to the many complications that pancreatic pseudocysts may cause, appropriate treatment of pseudocysts complicated with pseudoaneurysm has important clinical significance.
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Affiliation(s)
- Qimin Yang
- Department of Radiology, Affiliated Hospital of North Sichuan Medical College, 1 Maoyuan south Road, Nanchong, Sichuan, People’s Republic of China
| | - Bing Li
- Department of Radiology, Affiliated Hospital of North Sichuan Medical College, 1 Maoyuan south Road, Nanchong, Sichuan, People’s Republic of China
| | - Bai Jin Tao Sun
- Department of Radiology, Affiliated Hospital of North Sichuan Medical College, 1 Maoyuan south Road, Nanchong, Sichuan, People’s Republic of China
| | - Xiangkai Zhong
- Department of Radiology, Affiliated Hospital of North Sichuan Medical College, 1 Maoyuan south Road, Nanchong, Sichuan, People’s Republic of China
| | - Zhiqiang Qiu
- Department of Radiology, Affiliated Hospital of North Sichuan Medical College, 1 Maoyuan south Road, Nanchong, Sichuan, People’s Republic of China
| | - Hanfeng Yang
- Department of Radiology, Affiliated Hospital of North Sichuan Medical College, 1 Maoyuan south Road, Nanchong, Sichuan, People’s Republic of China
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12
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Mahmoudi G, Toolee H, Maskani R, Jokar F, Mokfi M, Hosseinzadeh A. COVID-19 and cancer risk arising from ionizing radiation exposure through CT scans: a cross-sectional study. BMC Cancer 2024; 24:298. [PMID: 38443829 PMCID: PMC10916077 DOI: 10.1186/s12885-024-12050-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 02/23/2024] [Indexed: 03/07/2024] Open
Abstract
BACKGROUND The surge in the utilization of CT scans for COVID-19 diagnosis and monitoring during the pandemic is undeniable. This increase has brought to the forefront concerns about the potential long-term health consequences, especially radiation-induced cancer risk. This study aimed to quantify the potential cancer risk associated with CT scans performed for COVID-19 detection. METHODS In this cross-sectional study data from a total of 561 patients, who were referred to the radiology center at Imam Hossein Hospital in Shahroud, was collected. CT scan reports were categorized into three groups based on the radiologist's interpretation. The BEIR VII model was employed to estimate the risk of radiation-induced cancer. RESULTS Among the 561 patients, 299 (53.3%) were males and the average age of the patients was 49.61 ± 18.73 years. Of the CT scans, 408 (72.7%) were reported as normal. The average age of patients with normal, abnormal, and potentially abnormal CT scans was 47.57 ± 19.06, 54.80 ± 16.70, and 58.14 ± 16.60 years, respectively (p-value < 0.001). The average effective dose was 1.89 ± 0.21 mSv, with 1.76 ± 0.11 mSv for males and 2.05 ± 0.29 mSv for females (p-value < 0.001). The average risk of lung cancer was 3.84 ± 1.19 and 9.73 ± 3.27 cases per 100,000 patients for males and females, respectively. The average LAR for all cancer types was 10.30 ± 6.03 cases per 100,000 patients. CONCLUSIONS This study highlights the critical issue of increased CT scan usage for COVID-19 diagnosis and the potential long-term consequences, especially the risk of cancer incidence. Healthcare policies should be prepared to address this potential rise in cancer incidence and the utilization of CT scans should be restricted to cases where laboratory tests are not readily available or when clinical symptoms are severe.
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Affiliation(s)
- Golshan Mahmoudi
- School of Allied Medical Sciences, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Heidar Toolee
- School of Allied Medical Sciences, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Reza Maskani
- School of Allied Medical Sciences, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Farzaneh Jokar
- School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Milad Mokfi
- School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Ali Hosseinzadeh
- Center for Health Related Social and Behavioral Sciences Research, Shahroud University of Medical Sciences, Shahroud, Iran.
- Department of Epidemiology, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran.
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13
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Huang Y, Schaff HV, Bagameri G, Pochettino A, DeMartino RR, Todd A, Greason KL. Differential expansion and outcomes of ascending and descending degenerative thoracic aortic aneurysms. J Thorac Cardiovasc Surg 2024; 167:918-926.e3. [PMID: 35577595 PMCID: PMC9547986 DOI: 10.1016/j.jtcvs.2022.03.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 03/02/2022] [Accepted: 03/29/2022] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To evaluate expansion of degenerative thoracic aortic aneurysms (TAAs) and compare results between ascending and descending TAAs. METHODS Among patients with diagnosis of degenerative TAA (1995-2015) in Olmsted County, we studied those having at least 2 computed tomography scans of TAA throughout the follow-up. Patients were classified as ascending or descending groups according to the segment where the maximal aortic diameter was measured. Primary end points were expansion rates and factors associated with TAA growth. RESULTS We investigated 137 patients, 70 (51.1%) of whom were women; 78 (56.9%) were in the ascending and 59 (43.1%) were in the descending group. Median baseline maximal aortic diameter was 48.5 mm (interquartile range, 47.0-49.9 mm) for ascending and 42.4 mm (interquartile range, 40.0-45.4 mm) for descending group (P < .001). Median expansion rate was higher in the descending than the ascending group (2.0 mm/year [interquartile range, 0.9-3.2 mm/year] vs 0.2 mm/year [IQR, 0.1-0.6 mm/year]; P < .001). Aneurysm in the descending aorta and larger baseline maximal aortic diameter were independently associated with TAA expansion. Advanced age and chronic obstructive pulmonary disease but not aneurysm size or location were independently associated with overall mortality (P < .05). Aneurysm in the descending aorta was associated with aortic-related events (P < .05). CONCLUSIONS Degenerative TAAs under surveillance expand slowly. Descending TAA and larger baseline maximal aortic diameter were independently associated with more rapid TAA expansion, but these factors did not influence all-cause mortality.
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Affiliation(s)
- Ying Huang
- Department of Cardiovascular Surgery, Mayo Clinic, Rochester, Minn
| | | | - Gabor Bagameri
- Department of Cardiovascular Surgery, Mayo Clinic, Rochester, Minn
| | - Alberto Pochettino
- Department of Cardiovascular Surgery, Mayo Clinic, Rochester, Minn; Mayo Clinic Center for Aortic Diseases, Mayo Clinic, Rochester, Minn
| | - Randall R DeMartino
- Mayo Clinic Center for Aortic Diseases, Mayo Clinic, Rochester, Minn; Division of Vascular and Endovascular Surgery, Mayo Clinic, Rochester, Minn
| | - Austin Todd
- Department of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minn
| | - Kevin L Greason
- Department of Cardiovascular Surgery, Mayo Clinic, Rochester, Minn
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14
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Pigaiani N, McCleskey B, Bortolotti F, De Leo D. Authors reply to "Commentary on - fatal cardiac air embolism after CT-guided percutaneous needle lung biopsy: medical complication or medical malpractice? -". Forensic Sci Med Pathol 2024; 20:293-294. [PMID: 37428293 DOI: 10.1007/s12024-023-00671-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/19/2023] [Indexed: 07/11/2023]
Affiliation(s)
- N Pigaiani
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, Piazzale L.A. Scuro, 10 - 37134, Verona, Italy.
- Division of Forensics, Department of Pathology, University of Alabama at Birmingham, 1515 6th Avenue South, Room 220, AL, 35233, Birmingham, USA.
| | - B McCleskey
- Division of Forensics, Department of Pathology, University of Alabama at Birmingham, 1515 6th Avenue South, Room 220, AL, 35233, Birmingham, USA
| | - F Bortolotti
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, Piazzale L.A. Scuro, 10 - 37134, Verona, Italy
| | - D De Leo
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, Piazzale L.A. Scuro, 10 - 37134, Verona, Italy
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15
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Pigaiani N, Barbiero G, Balestro E, Ausania F, McCleskey B, Begni E, Bortolotti F, Brunelli M, De Leo D. Fatal cardiac air embolism after CT-guided percutaneous needle lung biopsy: medical complication or medical malpractice? Forensic Sci Med Pathol 2024; 20:199-204. [PMID: 37160632 PMCID: PMC10944409 DOI: 10.1007/s12024-023-00639-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/28/2023] [Indexed: 05/11/2023]
Abstract
Computed tomography (CT)-guided percutaneous needle biopsy of the lung is a well-recognized and relatively safe diagnostic procedure for suspicious lung masses. Systemic air embolism (SAE) is a rare complication of transthoracic percutaneous lung biopsies. Herein, we present a case of an 81-year-old man who underwent CT-guided percutaneous needle biopsy of a suspicious nodule in the lower lobe of the right lung. Shortly after the procedure, the patient coughed up blood which prompted repeat CT imaging. He was found to have a massive cardiac air embolism. The patient became unresponsive and, despite resuscitation efforts, was pronounced dead. The pathophysiology, risk factors, clinical features, radiological evidence, and autopsy findings associated with SAE are discussed, which may, in light of the current literature, assist with the dilemma between assessing procedural complications and medical liability. Given the instances of SAE in the setting of long operative procedures despite careful technical execution, providing accurate and in-depth information, including procedure-related risks, even the rarest but potentially fatal ones, is recommended for informed consent to reduce medicolegal litigation issues.
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Affiliation(s)
- Nicola Pigaiani
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, Piazzale L.A. Scuro 10, Verona, 37134, Italy.
- Division of Forensics, Department of Pathology, University of Alabama at Birmingham, 1515 6th Avenue South, Room 220, Birmingham, AL, 35233, USA.
| | - Giulio Barbiero
- Unit of Radiology, Department of Medicine, University of Padova, University Hospital, 35128, Padua, Italy
| | - Elisabetta Balestro
- Unit of Respiratory Diseases, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, University Hospital, 35128, Padua, Italy
| | - Francesco Ausania
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, Piazzale L.A. Scuro 10, Verona, 37134, Italy
| | - Brandi McCleskey
- Division of Forensics, Department of Pathology, University of Alabama at Birmingham, 1515 6th Avenue South, Room 220, Birmingham, AL, 35233, USA
| | - Erica Begni
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, Piazzale L.A. Scuro 10, Verona, 37134, Italy
| | - Federica Bortolotti
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, Piazzale L.A. Scuro 10, Verona, 37134, Italy
| | - Matteo Brunelli
- Unit of Pathology, Department of Diagnostics and Public Health, University of Verona, Piazzale L.A. Scuro 10, Verona, 37134, Italy
| | - Domenico De Leo
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, Piazzale L.A. Scuro 10, Verona, 37134, Italy
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16
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Hegeman RRMJJ, van Ginkel DJ, Laengle S, Timmers L, Rensing BJWM, de Kroon TL, Sonker U, Kelder JC, Mach M, Andreas M, Swaans MJ, Ten Berg JM, Klein P. Preoperative computed tomography-imaging with patient-specific computer simulation in transcatheter aortic valve implantation: Design and rationale of the GUIDE-TAVI trial. Am Heart J 2024; 269:158-166. [PMID: 38163616 DOI: 10.1016/j.ahj.2023.12.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/28/2023] [Accepted: 12/27/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND Transcatheter aortic valve implantation (TAVI) is an established treatment option for patients with severe aortic valve stenosis, but is still associated with relatively high rates of pacemaker implantation and paravalvular regurgitation. Routine preoperative computed tomography (CT) combined with patient-specific computer modelling can predict the interaction between the TAVI device and the patient's unique anatomy, allowing physicians to assess the risk for paravalvular regurgitation and conduction disorders in advance to the procedure. The aim of this trial is to assess potential improvement in the procedural outcome of TAVI by applying CT-based patient-specific computer simulations in patients with suitable anatomy for TAVI. METHODS The GUIDE-TAVI trial is an international multicenter randomized controlled trial including patients accepted for TAVI by the Heart Team. Patients enrolled in the study will be randomized into 2 arms of each 227 patients. In patients randomized to the use of FEops HEARTGuide (FHG), patient-specific computer simulation with FHG is performed in addition to routine preoperative CT imaging and results of the FHG are available to the operator(s) prior to the scheduled intervention. In patients randomized to no use of FHG, only routine preoperative CT imaging is performed. The primary objective is to evaluate whether the use of FHG will reduce the incidence of mild to severe PVR, according to the Valve Academic Research Consortium 3. Secondary endpoints include the incidence of new conduction disorders requiring permanent pacemaker implantation, the difference between preoperative and final selected valve size, the difference between target and final implantation depth, change of preoperative decision, failure to implant valve, early safety composite endpoint and quality of life. CONCLUSIONS The GUIDE-TAVI trial is the first multicenter randomized controlled trial to evaluate the value of 3-dimensional computer simulations in addition to standard preprocedural planning in TAVI procedures.
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Affiliation(s)
- Romy R M J J Hegeman
- Department of Cardiothoracic Surgery, Sint Antonius Hospital, Nieuwegein, The Netherlands; Department of Cardiothoracic Surgery, Amsterdam University Medical Center, Amsterdam, the Netherlands.
| | - Dirk-Jan van Ginkel
- Department of Cardiology, Sint Antonius Hospital, Nieuwegein, The Netherlands
| | - Severin Laengle
- Department of Cardiothoracic Surgery, Medical University of Vienna, Vienna, Austria
| | - Leo Timmers
- Department of Cardiology, Sint Antonius Hospital, Nieuwegein, The Netherlands
| | - Benno J W M Rensing
- Department of Cardiology, Sint Antonius Hospital, Nieuwegein, The Netherlands
| | - Thomas L de Kroon
- Department of Cardiothoracic Surgery, Sint Antonius Hospital, Nieuwegein, The Netherlands
| | - Uday Sonker
- Department of Cardiothoracic Surgery, Sint Antonius Hospital, Nieuwegein, The Netherlands
| | - Johannes C Kelder
- Department of Epidemiology, Sint Antonius Hospital, Nieuwegein, The Netherlands
| | - Markus Mach
- Department of Cardiothoracic Surgery, Medical University of Vienna, Vienna, Austria; Department of Cardiovascular Surgery, Heart Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Martin Andreas
- Department of Cardiothoracic Surgery, Medical University of Vienna, Vienna, Austria
| | - Martin J Swaans
- Department of Cardiology, Sint Antonius Hospital, Nieuwegein, The Netherlands
| | - Jurriën M Ten Berg
- Department of Cardiology, Sint Antonius Hospital, Nieuwegein, The Netherlands; Cardiovascular Research Institute Maastricht, Maastricht, The Netherlands
| | - Patrick Klein
- Department of Cardiothoracic Surgery, Sint Antonius Hospital, Nieuwegein, The Netherlands; Department of Cardiothoracic Surgery, Amsterdam University Medical Center, Amsterdam, the Netherlands
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17
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Caramenti L, Gradowska PL, Moriña D, Byrnes G, Cardis E, Hauptmann M. Finite-Sample Bias of the Linear Excess Relative Risk in Cohort Studies of Computed Tomography-Related Radiation Exposure and Cancer. Radiat Res 2024; 201:206-214. [PMID: 38323646 DOI: 10.1667/rade-23-00187.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Accepted: 01/22/2024] [Indexed: 02/08/2024]
Abstract
The linear excess relative risk (ERR) is the most commonly reported measure of association in radiation epidemiological studies, when individual dose estimates are available. While the asymptotic properties of the ERR estimator are well understood, there is evidence of small sample bias in case-control studies of treatment-related radiation exposure and second cancer risk. Cohort studies of cancer risk after exposure to low doses of radiation from diagnostic procedures, e.g., computed tomography (CT) examinations, typically have small numbers of cases and risks are small. Therefore, understanding the properties of the estimated ERR is essential for interpretation and analysis of such studies. We present results of a simulation study that evaluates the finite-sample bias of the ERR estimated by time-to-event analyses and its confidence interval using simulated data, resembling a retrospective cohort study of radiation-related leukemia risk after CT examinations in childhood and adolescence. Furthermore, we evaluate how the Firth-corrected estimator reduces the finite-sample bias of the classical estimator. We show that the ERR is overestimated by about 30% for a cohort of about 150,000 individuals, with 42 leukemia cases observed on average. The bias is reduced for higher baseline incidence rates and for higher values of the true ERR. As the number of cases increases, the ERR is approximately unbiased. The Firth correction reduces the bias for all cohort sizes to generally around or under 5%. Epidemiological studies showing an association between radiation exposure from pediatric CT and cancer risk, unless very large, may overestimate the magnitude of the relationship, while there is no evidence of an increased chance for false-positive results. Conducting large studies, perhaps by pooling individual studies to increase the number of cases, should be a priority. If this is not possible, Firth correction should be applied to reduce small-sample bias.
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Affiliation(s)
- L Caramenti
- Institute of Biostatistics and Registry Research, Brandenburg Medical School Theodor Fontane; Neuruppin, Germany
| | - P L Gradowska
- Erasmus MC Cancer Institute; Rotterdam, The Netherlands
| | - D Moriña
- Department of Econometrics, Statistics and Applied Economics, Riskcenter-IREA, Universitat de Barcelona (UB); Barcelona, Spain
| | - G Byrnes
- International Agency for Research in Cancer (IARC); Lyon, France
| | - E Cardis
- Institute for Global Health, ISGlobal; Barcelona, Spain
- Universitat Pompeu Fabra (UPF); Barcelona, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP); Madrid, Spain
| | - M Hauptmann
- Institute of Biostatistics and Registry Research, Brandenburg Medical School Theodor Fontane; Neuruppin, Germany
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18
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Robatjazi M, Moayed M, Baghani HR, Molazadeh M, Shomoossi N. Evaluation of organ dose using size-specific dose estimation (SSDE) and related cancer risk due to chest CT scan during the COVID-19 pandemic. Radiat Environ Biophys 2024; 63:27-37. [PMID: 38185693 DOI: 10.1007/s00411-023-01056-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 12/08/2023] [Indexed: 01/09/2024]
Abstract
This study aimed to estimate lung and breast doses for individual patients using the size-specific dose estimate (SSDE) method, as well as calculating effective doses, in patients who underwent chest CT scans during the COVID-19 pandemic. Cancer risk incidence was estimated using excess relative risk (ERR), excess absolute risk (EAR), and lifetime attributable risk (LAR) models from the Biological Effects of Ionizing Radiation Report VII (BEIR-VII). Data from about 570 patients who underwent CT scans for COVID-19 screening were utilized for this study. Using the header of the CT images in a Python script, SSDE and effective dose were calculated for each patient. The SSDE obtained by water equivalent effective diameter (wSSDE) was considered as lung and breast dose, and applied in organ-specific cancer risk estimation. The mean wSSDE value for females (13.3 mGy) was slightly higher than that for males (13.1 mGy), but the difference was not statistically significant (P value = 0.41). No significant differences were observed between males and females in terms of calculated EAR and ERR for lung cancer at 5 and 30 years after exposure (P value = 0.47, 0.46, respectively). Similarly, there was no significant difference in lung cancer LAR values between females and males (P value = 0.48). The results also indicated a decrease in LAR values for both lung and breast cancers with increasing exposure age. In accordance with the ALARA (as low as reasonably achievable) principle, it is important for medical staff and the general public to consider the benefits of CT imaging in detecting such infections. Additionally, imaging medical physicists and CT scan experts should optimize imaging protocols and strike a balance between image quality for detecting abnormalities and radiation dose, all while adhering to the ALARA principle.
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Affiliation(s)
- Mostafa Robatjazi
- Department of Medical Physics and Radiological Sciences, Sabzevar University of Medical Sciences, Sabzevar, Iran
- Non-Communicable Disease Research Center, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | - Mahdis Moayed
- Department of Medical Physics and Radiological Sciences, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | | | - Mikaeil Molazadeh
- Department of Medical Physics, Tabriz University of Medical Sciences, Tabriz, Iran
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Singh P, Nair K R, Batra A, Singh SN. Traumatic subcutaneous emphysema following blood donation: A case report. Transfusion 2024; 64:550-553. [PMID: 38380495 DOI: 10.1111/trf.17762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 01/29/2024] [Accepted: 01/31/2024] [Indexed: 02/22/2024]
Abstract
BACKGROUND Subcutaneous emphysema is a condition where air becomes trapped under the skin, typically resulting from surgery or skin trauma. It is mostly localized and its occurrence in blood donors is exceedingly rare. Phlebotomy poses minimal risk of subcutaneous emphysema, but procedural errors may lead to such complications. STUDY DESIGN AND METHOD This is a case report of 29-year-old repeat blood donor who experienced subcutaneous emphysema following blood donation. The donor was vigorously squeezing sponge ball during donation resulting in displacement of the needle which required readjustment. Post-donation, the donor reported a crackling sensation and mild swelling near phlebotomy site. Non-contrast computed tomography (NCCT) scans confirmed subcutaneous emphysema, attributing its development to air trapping in subcutaneous plane due to ball valve mechanism. RESULTS Computed tomography (CT) imaging revealed subcutaneous emphysematous changes in the right cubital region and no evidence of hematoma. The swelling spontaneously subsided in 10-12 days without any intervention. The case underscores the importance of differentiating subcutaneous emphysema from common complications like hematoma. DISCUSSION Subcutaneous emphysema in blood donors is exceptionally rare but should be managed with clear communication. Donors should be reassured that the condition, although rare, is benign and self-resolving. Healthcare providers should be equipped to handle such rare complications, offering appropriate care and documenting incidents for future prevention.
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Affiliation(s)
- Pallavi Singh
- Department of Transfusion Medicine, MPMMCC-HBCH, Varanasi, India
| | - Revathy Nair K
- Department of Transfusion Medicine, MPMMCC-HBCH, Varanasi, India
| | - Akshay Batra
- Department of Transfusion Medicine, MPMMCC-HBCH, Varanasi, India
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Poosiri S, Krisanachinda A, Khamwan K. Evaluation of patient radiation dose and risk of cancer from CT examinations. Radiol Phys Technol 2024; 17:176-185. [PMID: 38048023 DOI: 10.1007/s12194-023-00763-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 11/02/2023] [Accepted: 11/03/2023] [Indexed: 12/05/2023]
Abstract
Computed tomography (CT) examinations have been increasingly requested and become the major sources of patient exposure. The cancer risk from CT scans is contingent upon the amount of absorbed dose of organs. This study aims to determine the organ doses and risk of cancer incidence and mortality from CT examinations at high dose (cumulative effective dose, CED ≥ 100 mSv) in a single day to low dose (CED < 100 mSv) from common CT procedures. Data were gathered from two academic centers of patients aged 15 to 75 years old performed CT examinations during the period of 5 years. CED and organ dose were calculated using Monte Carlo simulation software. Lifetime attributable risk (LAR) was determined following Biological Effects of Ionizing Radiation (BEIR) VII report based on life table and baseline cancer rates of Thai population. At high dose, the highest LAR for breast cancer incidence in young female was 82 per 100,000 exposed patients with breast dose of 148 mGy (CT whole abdomen). The highest LAR for liver cancer incidence in male patient was 72 per 100,000 with liver dose of 133 mGy (multiple CT scans). At low dose, the highest average LAR for breast cancer incidence in young female was 23 per 100,000 while for liver cancer incidence in male patients was 22 per 100,000 (CTA whole aorta). Even though the LAR of cancer incidence and mortality was less than 100 per 100,000, they should not be neglected. The risk of cancer incidence may be increased in later life, particularly in young patients.
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Affiliation(s)
- Saowapark Poosiri
- Medical Physics Program, Department of Radiology, Faculty of Medicine, Chulalongkorn University, 1873 Rama IV Road, Pathumwan, Bangkok, 10330, Thailand.
- Department of Radiology, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand.
| | - Anchali Krisanachinda
- Medical Physics Program, Department of Radiology, Faculty of Medicine, Chulalongkorn University, 1873 Rama IV Road, Pathumwan, Bangkok, 10330, Thailand
- Department of Radiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Kitiwat Khamwan
- Medical Physics Program, Department of Radiology, Faculty of Medicine, Chulalongkorn University, 1873 Rama IV Road, Pathumwan, Bangkok, 10330, Thailand
- Department of Radiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
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Wingren CJ. Commentary on "Fatal cardiac air embolism after CT-guided percutaneous needle lung biopsy: medical complication or medical malpractice?". Forensic Sci Med Pathol 2024; 20:295-296. [PMID: 37357244 DOI: 10.1007/s12024-023-00667-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2023]
Abstract
To differentiate between medical malpractice and expected, but rare, medical complication in a medicolegal autopsy context is often difficult. Such an assessment requires knowledge about the clinical practice associated with the procedure at hand, and that findings of the autopsy, including medical relevant information such as patient chart, radiological imaging, and statements from witnesses about the medical procedure itself, provides evidence that substantiate either conclusion. In a case report published in the journal such an assessment is discussed by presenting findings and circumstances surrounding the death of a patient during a percutaneous needle lung biopsy procedure. The authors conclude that the death was not due to medical malpractice. However, in this commentary it is highlighted that the reasoning behind the conclusion needs to be further substantiated.
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Affiliation(s)
- Carl Johan Wingren
- Forensic Medicine Unit, Department of Clinical Sciences, Malmö, Faculty of Medicine, Lund University, Sölvegatan 25, 223 62, Lund, Sweden.
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22
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Shaw KA, Anigian K, Sucato DJ. Postoperative CT imaging to characterize fusion in pediatric and adolescent vertebral column resection. Spine Deform 2024; 12:403-410. [PMID: 37889407 DOI: 10.1007/s43390-023-00775-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 10/07/2023] [Indexed: 10/28/2023]
Abstract
BACKGROUND Vertebral column resection (VCR) is a powerful corrective technique for the management severe, rigid spinal deformities but does carry a relatively high complications rate. One of the feared complications is pseudarthrosis which places the patient at risk for implant failure. We present a single-center experience with post-operative computed tomography (CT) imaging at the osteotomy site to screen for impending pseudarthrosis. METHODS A retrospective review of a single surgeon series of posterior-only VCR performed for severe pediatric and adolescent spinal deformities was performed. Demographic, radiographic, and clinical data were collected. Patients underwent postoperative CT imaging at the osteotomy site 6-9 months following VCR with grading of the osteotomy fusion. Patients with impending pseudarthrosis were recommended for prophylactic revision surgery. RESULTS Thirty-three patients were included (mean age 11.6 ± 4.9 years, 54.5% female), undergoing a mean 1.9 level VCR. Kyphoscoliosis accounted for 75.7% (N = 25/33) of cases with 45.5% of all cases being congenital etiology and 60.6% having at least 1 previous surgery. Postoperative CT imaging was performed in 22 patients at a mean of 7.8 months following VCR. Two patients were identified as having impending pseudarthrosis with one undergoing revision surgery to enhance the posterior fusion, with addition of a third rod while one patient refusing surgery who subsequently developed broken hardware requiring revision surgery. No patient with a stable fusion on CT imaging developed a clinically significant pseudarthrosis. DISCUSSION Postoperative CT imaging of the osteotomy is useful in screening for impending pseudarthrosis and can aide in decision making for clearance to return to activity or the need for prophylactic intervention following VCR in pediatric and adolescent patients. We advocate that obtaining routine CT imaging of the osteotomy site at 6-9 months may identify potential complications earlier and allow for prophylactic intervention.
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Affiliation(s)
- K Aaron Shaw
- Department of Pediatric Orthopaedic Surgery, Children's Mercy Hospital, Kansas City, MO, USA.
| | - Kendall Anigian
- Department of Pediatric Orthopaedic Surgery, Cincinnati Children's Hospital, Cincinnati, OH, USA
| | - Daniel J Sucato
- Department of Pediatric Orthopaedic Surgery, Scottish Rite for Children Hospital, Dallas, TX, USA
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Kazemi MA, Shamshiri M, Kiani A, Davarpanah AH, Ghanaati H, Moradi B, Chavoshi M. Anthracosis, a Distinct Cause of Vocal Fold Paralysis: Case Series. J Voice 2024; 38:492-495. [PMID: 34753626 DOI: 10.1016/j.jvoice.2021.09.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 09/10/2021] [Accepted: 09/15/2021] [Indexed: 10/19/2022]
Abstract
Vocal fold paralysis (VFP) can happen in various conditions due to mediastinal LADs, however no study has proposed anthracosis as an etiology. Here we discussed the chest CT features of anthracosis related LADs causing VFP. Among 41 cases of pulmonary anthracosis, 10 had VFP that all were presented with hoarseness. The paralysis was unilateral (left side) in all cases. Extra-nodal infiltration and conglomeration of lymph nodes were significantly higher in patients with paralysis. Left paratracheal, pre-vascular, and aortopulmonary window lymph nodes were seen in all patients. We propose that mediastinal LADs secondary to anthracosis could be a reason for left side VFP.
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Affiliation(s)
- Mohamad Ali Kazemi
- Department of Radiology, Amiralam Hospital, Tehran University of Medical Sciences, Tehran, Iran; Department of Radiology, Advanced Diagnostic and Interventional Radiology Research Center (ADIR), Medical Imaging Center, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohaddeseh Shamshiri
- Department of Radiology, Amiralam Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Arda Kiani
- Tracheal Diseases Research Center, Nationah Research institute of Tuberclosis and Lung Disease, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amir H Davarpanah
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA
| | - Hosein Ghanaati
- Department of Radiology, Advanced Diagnostic and Interventional Radiology Research Center (ADIR), Medical Imaging Center, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - Behnaz Moradi
- Department of Radiology, Advanced Diagnostic and Interventional Radiology Research Center (ADIR), Medical Imaging Center, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran; Department of Radiology, Yas Hospital complex, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammadreza Chavoshi
- Department of Radiology, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran.
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Tucker JE, Wirt MD. Limiting Exposure to Scattered Radiation From a CT System Installed in a Two-Sided Deployable ISO-Shelter. Mil Med 2024; 189:e638-e644. [PMID: 37715667 DOI: 10.1093/milmed/usad366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/13/2023] [Accepted: 09/05/2023] [Indexed: 09/18/2023] Open
Abstract
INTRODUCTION Diagnostic radiology in the deployed military environment (in-theater diagnostic radiology) was greatly improved in the early 1990s with the addition of CT systems installed in military-grade one-sided expandable ISO-shelters. These shelters were provided with limited radiation shielding by several flexible lead curtains covering only a small portion of the shelter walls, necessitating placement of deployed CT systems at substantial distances from the field medical facility to limit exposures to personnel from secondary radiation. The newest generation deployable CT system is housed in a two-sided ISO-shelter with radiation shielding applied to the shelter walls. To ensure compliance with military and national standards for protection against ionizing radiation, we developed a simple method to calculate safe distances based on workload, frequencies of the various CT exams performed, and occupancy of controlled and uncontrolled areas. MATERIALS AND METHODS Calculation of radiation air kerma rates outside a two-sided CT ISO-shelter was developed using guidance from the National Council on Radiation Protection and Measurements Report No. 147. The simplified formula included measured radiation transmission factors for the ISO-shelter wall and installed shielding, occupancy factors, fraction of all CT exams that covered the chest, abdomen, and/or pelvis, total number of CT exams per week, and shielding design goals for controlled and uncontrolled areas. The formula was modified subsequently to account for whole-body CT exams expected during armed conflict. RESULTS Calculated safe distances revealed that the shielded two-sided CT ISO-shelter can be positioned much closer to the surgical shelters of the field medical unit than the previously unshielded one-sided CT ISO-shelter. Tables of safe distances for controlled and uncontrolled areas for the two medical support environments of disaster relief/peacekeeping and combat are provided. For example, for a controlled area at 100% occupancy when 300 CT exams per week are performed and 50% of those exams are of the chest, abdomen, and/or pelvis, the safe distance between the nearest surgical shelter and the shielded CT ISO-shelter is 2.1 m. By comparison, the safe distance for an unshielded CT ISO-shelter is 8.5 m under the same conditions. For lower occupancy factors and lower weekly workload, safe distances from the nearest surgical shelter are often negligible. CONCLUSIONS The shielding in the new deployable CT ISO-shelter substantially reduces the distance between it and the surgical shelters of the field medical unit necessary to ensure radiation safety. Safe distances depend on several factors including workload, types and frequencies of CT exams, occupancy factors, and classification of the area around the ISO-shelter, i.e., controlled and uncontrolled.
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Affiliation(s)
- Jonathan E Tucker
- Department of Radiology, Brooke Army Medical Center, JBSA Fort Sam Houston, TX 78234-4504, USA
| | - Michael D Wirt
- Department of Radiology, Brooke Army Medical Center, JBSA Fort Sam Houston, TX 78234-4504, USA
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Jaecker V, Zocholl M, Friederichs J, Osten P, Fuchs T, Stuby FM, Regenbogen S. Intermediate to Long-Term Results Following Traumatic Hip Dislocation: Characteristics, CT-Based Analysis, and Patient-Reported Outcome Measures. J Bone Joint Surg Am 2024; 106:346-352. [PMID: 38113303 DOI: 10.2106/jbjs.23.00660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
BACKGROUND Traumatic hip dislocation is a rare yet severe injury. As the long-term morbidity, subsequent complications, and clinical outcomes are nearly unknown, we aimed to analyze traumatic hip dislocations and identify specific factors that may predict the clinical outcome. METHODS Data on injury-related characteristics and computed tomographic (CT) scans for all consecutive adult patients who had been managed for traumatic hip dislocation between 2009 and 2021 were analyzed. At the time of follow-up, the patients were assessed with regard to osteonecrosis, posttraumatic osteoarthritis (OA), further operations and complications, return to sports and work, and patient-reported outcome measures (PROMs), including the Tegner Activity Scale and modified Harris hip score. RESULTS One hundred and twelve patients (mean age [and standard deviation], 43.12 ± 16.6 years) were included. Associated acetabular rim and femoral head fractures (Pipkin Type I to IV) were observed in 44% and 40% of patients, respectively. Concomitant injuries occurred in 67% of the patients, most commonly involving the knee (29% of patients). Sixty-nine patients (61.6%) were available for follow-up; the mean duration of follow-up was 6.02 ± 3.76 years. The rates of osteonecrosis and posttraumatic OA were 13% and 31.9%, respectively, and were independent of the timing of hip reduction, leading to subsequent total hip arthroplasty (THA) in 19% of patients. Sciatic nerve injury occurred in 27.5% of the patients who were available for follow-up. Both THA and sciatic nerve injury were associated with posterior acetabular rim or Pipkin Type-IV fractures (p < 0.001). Only 33.3% of the patients returned to their pre-injury level of sports, 24.6% did not return to work, and 27.5% reported having sexual dysfunction. PROMs (Tegner Activity Scale, modified Harris hip score) were significantly worse in patients with osteonecrosis, posttraumatic OA, or residual sciatic nerve injury (p < 0.05). CONCLUSIONS Traumatic hip dislocations are predominantly associated with Pipkin and acetabular rim fractures, leading to overall limitations of activities of daily living, sports, and sexual function at intermediate to long-term follow-up. Patients with associated acetabular rim or Pipkin Type-IV fractures are most likely to require THA for the treatment of osteonecrosis or posttraumatic OA and are at greater risk for sustaining sciatic nerve injury. LEVEL OF EVIDENCE Prognostic Level IV . See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Vera Jaecker
- Center for Musculoskeletal Surgery, Charitè-University Medicine Berlin, Berlin, Germany
- Department of Orthopaedic Surgery, Trauma Surgery and Sports Medicine, Cologne Merheim Medical Center, University of Witten/Herdecke, Cologne, Germany
| | - Malin Zocholl
- Center for Musculoskeletal Surgery, Vivantes Klinikum, Berlin-Friedrichshain, Germany
| | - Jan Friederichs
- Department of Traumatology and General Surgery, Berufsgenossenschaftliche Unfallklinik Murnau, Murnau, Germany
| | - Philipp Osten
- Department of Orthopaedic Surgery, Trauma Surgery and Sports Medicine, Cologne Merheim Medical Center, University of Witten/Herdecke, Cologne, Germany
| | - Thomas Fuchs
- Center for Musculoskeletal Surgery, Vivantes Klinikum, Berlin-Friedrichshain, Germany
| | - Fabian M Stuby
- Department of Traumatology and General Surgery, Berufsgenossenschaftliche Unfallklinik Murnau, Murnau, Germany
| | - Stephan Regenbogen
- Department of Traumatology and General Surgery, Berufsgenossenschaftliche Unfallklinik Murnau, Murnau, Germany
- Department of Traumatology, Berufsgenossenschaftliche Unfallklinik Ludwigshafen, University of Heidelberg, Ludwigshafen, Germany
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Peiliang Wang MD, Yikun Li MM, Mengyu Zhao MM, Jinming Yu MD, Feifei Teng MD. Distinguishing immune checkpoint inhibitor-related pneumonitis from radiation pneumonitis by CT radiomics features in non-small cell lung cancer. Int Immunopharmacol 2024; 128:111489. [PMID: 38266450 DOI: 10.1016/j.intimp.2024.111489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 12/26/2023] [Accepted: 01/02/2024] [Indexed: 01/26/2024]
Abstract
PURPOSE To develop a CT-based model to classify pneumonitis etiology in patients with non-small cell lung cancer(NSCLC) after radiotherapy(RT) and Immune checkpoint inhibitors(ICIs). METHODS We retrospectively identified 130 NSCLC patients who developed pneumonitis after receipt of ICIs only (n = 50), thoracic RT only (n = 50) (ICIs only + thoracic RT only, the training cohort, n = 100), and RT + ICIs (the test cohort, n = 30). Clinical and CT radiomics features were described and compared between different groups. We constructed a random forest (RF) classifier and a linear discriminant analysis (LDA) classifier by CT radiomics to discern pneumonitis etiology. RESULTS The patients in RT + ICIs group have more high grade (grade 3-4) pneumonitis compared to patients in ICIs only or RT only group (p < 0.05). Pneumonitis after the combined therapy was not a simple superposition mode of RT-related pneumonitis(RP) and ICI-related pneumonitis(CIP), resulting in the distinct characteristics of both RT and ICIs-related pneumonitis. The RF classifier showed favorable discrimination between RP and CIP with an area under the receiver operating curve (AUC) of 0.859 (95 %CI: 0.788-0.929) in the training cohort and 0.851 (95 % CI: 0.700-1) in the test cohort. The LDA classifier achieved an AUC of 0.881 (95 %CI: 0.815-0.947) in the training cohort and 0.842 (95 %CI: 0.686-0.997) in the test cohort. Our analysis revealed four principal CT-based features shared across both models:original_glrlm_LongRunLowGrayLevelEmphasis, wavelet-HLL_firstorder_Median, wavelet-LLL_ngtdm_Busyness, and wavelet-LLL_glcm_JointAverage. CONCLUSION CT radiomics-based classifiers could provide a noninvasive method to identify the predominant etiology in NSCLC patients who developed pneumonitis after RT alone, ICIs alone or RT + ICIs.
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Affiliation(s)
- M D Peiliang Wang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China; Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Cheeloo College of Medicine, Shandong University, Jinan 250117, China
| | - M M Yikun Li
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China
| | - M M Mengyu Zhao
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China
| | - M D Jinming Yu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China; Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Cheeloo College of Medicine, Shandong University, Jinan 250117, China
| | - M D Feifei Teng
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China; Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Cheeloo College of Medicine, Shandong University, Jinan 250117, China.
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Akhavan-Mofrad A, Gupta KK, Jolly K. Carolyn's window approach for spontaneous frontal sinus meningoencephalocele. BMJ Case Rep 2024; 17:e258886. [PMID: 38355205 PMCID: PMC10868238 DOI: 10.1136/bcr-2023-258886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2024] Open
Abstract
Spontaneous meningoencephaloceles (MECs) are sparsely documented in the literature. Those occurring in the frontal sinus are an exceedingly rare entity. MECs are commonly associated with cerebrospinal fluid (CSF) rhinorrhoea. CSF rhinorrhoea is frequently misdiagnosed, causing delays in diagnosis and management. The subsequently increased risk of bacterial meningitis can be life-threatening to patients. We report the case of a woman in her late 70s with a spontaneous frontal sinus MEC, presenting with a 6-month history of CSF rhinorrhoea. The patient was successfully treated using the novel Carolyn's window approach endoscopically; 9-month follow-up revealed no skull-base breach. Our case emphasises the importance of considering MEC as a differential diagnosis for clear rhinorrhoea and demonstrates successful repair through a novel surgical approach.
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Affiliation(s)
| | - Keshav Kumar Gupta
- ENT and Skull Base Surgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - Karan Jolly
- ENT and Skull Base Surgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
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Hasegawa N, Oka A, Awoniyi M, Yoshida Y, Tobita H, Ishimura N, Ishihara S. Dynamic ultrasonography for optimizing treatment position in superior mesenteric artery syndrome: Two case reports and review of literature. World J Gastroenterol 2024; 30:499-508. [PMID: 38414592 PMCID: PMC10895595 DOI: 10.3748/wjg.v30.i5.499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 12/11/2023] [Accepted: 01/12/2024] [Indexed: 01/31/2024] Open
Abstract
BACKGROUND Superior mesenteric artery (SMA) syndrome is a rare cause of duodenal obstruction by extrinsic compression between the SMA and the aorta (SMA-Ao). Although the left lateral recumbent position is considered effective in the treatment of SMA syndrome, individual variations in the optimal patient position have been noted. In this report, we present two elderly cases of SMA syndrome that exhibited rapid recovery due to ultrasonographic dynamic evaluation of the optimal position for each patient. CASE SUMMARY Case 1: A 90-year-old man with nausea and vomiting. Following diagnosis of SMA syndrome by computed tomography (CT), ultrasonography (US) revealed the SMA-Ao distance in the supine position (4 mm), which slightly improved in the lateral position (5.7-7.0 mm) without the passage of duodenal contents. However, in the sitting position, the SMA-Ao distance was increased to 15 mm accompanied by improved content passage. Additionally, US indicated enhanced passage upon abdominal massage on the right side. By day 2, the patient could eat comfortably with the optimal position and massage. Case 2: An 87-year-old woman with vomiting. After the diagnosis of SMA syndrome and aspiration pneumonia by CT, dynamic US confirmed the optimal position (SMA-Ao distance was improved to 7 mm in forward-bent position, whereas it remained at 5 mm in the supine position). By day 7 when her pneumonia recovered, she could eat with the optimal position. CONCLUSION The optimal position for SMA syndrome varies among individuals. Dynamic US appears to be a valuable tool in improving patient outcomes.
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Affiliation(s)
- Nobuaki Hasegawa
- Department of Internal Medicine II, Shimane University Faculty of Medicine, Izumo 693-8501, Shimane, Japan
| | - Akihiko Oka
- Department of Internal Medicine II, Shimane University Faculty of Medicine, Izumo 693-8501, Shimane, Japan
| | - Muyiwa Awoniyi
- Department of Gastroenterology, Hepatology and Nutrition, Digestive Disease and Surgery Institute, Hepatology Section, Cleveland Clinic, Cleveland, OH 44195, United States
| | - Yuri Yoshida
- Clinical Laboratory Division, Shimane University Hospital, Izumo 693-8501, Shimane, Japan
| | - Hiroshi Tobita
- Division of Hepatology, Shimane University Hospital, Izumo 693-8501, Japan
| | - Norihisa Ishimura
- Department of Internal Medicine II, Shimane University Faculty of Medicine, Izumo 693-8501, Shimane, Japan
| | - Shunji Ishihara
- Department of Internal Medicine II, Shimane University Faculty of Medicine, Izumo 693-8501, Shimane, Japan
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Drews MA, Milosevic A, Hamacher R, Grüneisen JS, Haubold J, Opitz MK, Bauer S, Umutlu L, Forsting M, Schaarschmidt BM. Impact of CT and MRI in the diagnostic workup of malignant triton tumour-a monocentric analysis and review of the literature. Br J Radiol 2024; 97:430-438. [PMID: 38308031 DOI: 10.1093/bjr/tqad035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 11/15/2023] [Accepted: 11/20/2023] [Indexed: 02/04/2024] Open
Abstract
OBJECTIVES Malignant triton tumours (MTTs) are rare but aggressive subtypes of malignant peripheral nerve sheath tumours (MPNSTs) with a high recurrence rate and 5-year survival of 14%. Systematic imaging data on MTTs are scarce and mainly based on single case reports. Therefore, we aimed to identify typical CT and MRI features to improve early diagnosis rates of this uncommon entity. METHODS A systematic review on literature published until December 2022 on imaging characteristics of MTTs was performed. Based on that, we conducted a retrospective, monocentric analysis of patients with histopathologically proven MTTs from our department. Explorative data analysis was performed. RESULTS Initially, 29 studies on 34 patients (31.42 ± 22.6 years, 12 female) were evaluated: Literature described primary MTTs as huge, lobulated tumours (108 ± 99.3 mm) with central necrosis (56% [19/34]), low T1w (81% [17/21]), high T2w signal (90% [19/21]) and inhomogeneous enhancement on MRI (54% [7/13]). Analysis of 16 patients (48.9 ± 13.8 years; 9 female) from our institution revealed comparable results: primary MTTs showed large, lobulated masses (118 mm ± 64.9) with necrotic areas (92% [11/12]). MRI revealed low T1w (100% [7/7]), high T2w signal (100% [7/7]) and inhomogeneous enhancement (86% [6/7]). Local recurrences and soft-tissue metastases mimicked these features, while nonsoft-tissue metastases appeared unspecific. CONCLUSIONS MTTs show characteristic features on CT and MRI. However, these do not allow a reliable differentiation between MTTs and other MPNSTs based on imaging alone. Therefore, additional histopathological analysis is required. ADVANCES IN KNOWLEDGE This largest published systematic analysis on MTT imaging revealed typical but unspecific imaging features that do not allow a reliable, imaging-based differentiation between MTTs and other MPNSTs. Hence, additional histopathological analysis remains essential.
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Affiliation(s)
- Marcel A Drews
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, 45147 Essen, Germany
| | - Aleksandar Milosevic
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, 45147 Essen, Germany
| | - Rainer Hamacher
- West German Cancer Centre, Department of Medical Oncology, University Hospital Essen, 45147 Essen, Germany
| | - Johannes S Grüneisen
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, 45147 Essen, Germany
| | - Johannes Haubold
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, 45147 Essen, Germany
| | - Marcel K Opitz
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, 45147 Essen, Germany
| | - Sebastian Bauer
- West German Cancer Centre, Department of Medical Oncology, University Hospital Essen, 45147 Essen, Germany
| | - Lale Umutlu
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, 45147 Essen, Germany
| | - Michael Forsting
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, 45147 Essen, Germany
| | - Benedikt M Schaarschmidt
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, 45147 Essen, Germany
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Sakkas A, Weiß C, Wilde F, Ebeling M, Thiele OC, Mischkowski RA, Pietzka S. Impact of antithrombotic therapy on acute and delayed intracranial haemorrhage and evaluation of the need of short-term hospitalisation based on CT findings after mild traumatic brain injury: experience from an oral and maxillofacial surgery unit. Eur J Trauma Emerg Surg 2024; 50:157-172. [PMID: 36707437 DOI: 10.1007/s00068-023-02228-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Accepted: 01/13/2023] [Indexed: 01/28/2023]
Abstract
PURPOSE The primary aim was to compare the prevalence of acute and delayed intracranial haemorrhage (ICH) following mild traumatic brain injury (mTBI) in patients on antithrombotic medication referred to a clinic for oral and plastic maxillofacial surgery. The secondary aim was to evaluate the need for short-term hospitalisation based on initial radiological and clinical findings. METHODS This was an observational retrospective single-centre study of all patients on antithrombotic medication who were admitted to our department of oral and plastic maxillofacial surgery with mTBI over a 5 year period. Demographic and anamnesis data, injury characteristics, antithrombotic medication, radiological findings, treatment, and outcome were analysed. Patients were divided into the following four groups based on their antithrombotic medication: (1) single antiplatelet users, (2) vitamin K antagonist users, (3) direct oral anticoagulant users, and (4) double antithrombotic users. All patients underwent an emergency cranial CT (CT0) at admission. Based on clinical and radiological evaluation, different treatment protocols were applied. Patients with positive CT0 findings and patients with secondary neurological deterioration received a control CT (CT1) before discharge. Acute and delayed ICH and patient's outcome during hospitalisation were evaluated using descriptive statistical analysis. RESULTS A total of 696 patients (mean age, 71.6 years) on antithrombotic medication who presented at our department with mTBI were included in the analysis. Most injuries were caused by a ground-level fall (76.9%). Thirty-six patients (5.1%) developed an acute traumatic ICH, and 47 intracerebral lesions were detected by radiology-most of these in patients taking acetylsalicylic acid. No association was detected between ICH and antithrombotic medication (p = 0.4353). In total, 258 (37.1%) patients were admitted for 48 h in-hospital observation. The prevalence of delayed ICH was 0.1%, and the mortality rate was 0.1%. Multivariable analysis identified a Glasgow Coma Scale (GCS) of < 15, loss of consciousness, amnesia, headache, dizziness, and nausea as clinical characteristics significantly associated with an increased risk of acute ICH, whereas age, sex, and trauma mechanism were not associated with ICH prevalence. Of the 39 patients who underwent a control CT1, most had a decreasing or at least constant intracranial lesion; in three patients, intracranial bleeding increased but was not clinically relevant. CONCLUSION According to our experience, antithrombotic therapy does not increase the rate of ICH after mTBI. A GCS of < 15, loss of consciousness, amnesia, headache, dizziness, and nausea are indicators of higher ICH risk. A second CT scan is more effective in patients with secondary neurological deterioration. Initial CT findings were not clinically relevant and should not indicate in-hospital observation.
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Affiliation(s)
- Andreas Sakkas
- Department of Cranio-Maxillo-Facial-Surgery, German Armed Forces Hospital Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany.
- Department of Cranio-Maxillo-Facial-Surgery, University Hospital Ulm, Ulm, Germany.
| | - Christel Weiß
- Medical Statistics and Biomathematics, University Medical Centre Mannheim, Heidelberg University, Mannheim, Germany
| | - Frank Wilde
- Department of Cranio-Maxillo-Facial-Surgery, German Armed Forces Hospital Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany
- Department of Cranio-Maxillo-Facial-Surgery, University Hospital Ulm, Ulm, Germany
| | - Marcel Ebeling
- Department of Cranio-Maxillo-Facial-Surgery, German Armed Forces Hospital Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany
| | | | | | - Sebastian Pietzka
- Department of Cranio-Maxillo-Facial-Surgery, German Armed Forces Hospital Ulm, Oberer Eselsberg 40, 89081, Ulm, Germany
- Department of Cranio-Maxillo-Facial-Surgery, University Hospital Ulm, Ulm, Germany
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Rungprai C, Maneeprasopchoke P, Steadman J, Sripanich Y, Suksintharanon M. Bilateral Os Trigonum Fracture Treated With Simultaneous Posterior Ankle Arthroscopy. J Am Acad Orthop Surg Glob Res Rev 2024; 8:01979360-202402000-00010. [PMID: 38354219 DOI: 10.5435/jaaosglobal-d-23-00237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Accepted: 12/18/2023] [Indexed: 02/16/2024]
Abstract
This is a case report of a 21-year-old female undergraduate student who sustained bilateral ankle injuries while jumping from a moving van wearing 3-inch high heel shoes. Upon initial presentation, her injury was treated conservatively as an acute bilateral ankle sprain for 6 weeks. However, the patient reported no improvement of pain and remained unable to self-ambulate. Bilateral MRI and CT scans of both ankles demonstrated bilateral os trigonum fractures. She underwent bilateral posterior ankle arthroscopic débridement of both os trigonum. At the postoperative 36-month follow-up, the patient reported notable improvement of all functional outcomes (36-item Short Form survey and Foot and Ankle Ability Measure), reported return to the same level of sports activities, and experienced no pain (visual analog scale) on either ankle. This is the first report in the literature of bilateral os trigonum fracture treated with simultaneous posterior ankle arthroscopic débridement.
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Affiliation(s)
- Chamnanni Rungprai
- From the Department of Orthopaedics, Phramongkutklao Hospital and College of Medicine, Ratchathewi Bangkok, Thailand (Dr. Rungprai, Dr. Maneeprasopchoke, Dr. Sripanich, and Dr. Suksintharanon), and the Department of Orthopaedics (Steadman), University of Utah, Salt Lake City, UT
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Leiva T, Golubkova A, Snyder K, Johnson J, Hunter CJ. Pediatric Traumatic Lumbar Hernias and Associated Injuries: A Case Series. Pediatr Emerg Care 2024; 40:103-107. [PMID: 38295192 DOI: 10.1097/pec.0000000000003116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
OBJECTIVE Traumatic lumbar hernias are a rare entity mostly seen with high-impact, blunt abdominal trauma. This injury occurs when there is disruption of the posterior musculature along with bony structures, allowing for herniation of abdominal contents. There are minimal cases of this entity reported in adults, but even fewer in the pediatric population. METHODS We describe 3 cases of traumatic lumbar hernia at our institution as well as provide a review of the literature to elucidate the most common mechanisms, severity of injury, and associated injuries. RESULTS Traumatic lumbar hernia is most commonly seen in restrained passengers involved in motor vehicle collisions. A majority of cases are diagnosed using computed tomography imaging and less frequently during primary surgical exploration. The most common associated injuries were mesenteric and bowel injuries, followed by spinal and chest trauma. Traumatic lumbar hernia often leads to prolonged hospital stays and increased need for posthospital rehabilitation because of associated traumatic comorbidities. CONCLUSIONS Traumatic lumbar hernia is a rare entity in children, and early suspicion and identification of associated injuries is necessary in the management of these patients.
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Affiliation(s)
- Tyler Leiva
- From the Division of Pediatric Surgery, Oklahoma Children's Hospital, Oklahoma City, OK
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Tosun O, Sinci KA, Bacaksiz T, Buyukuysal MC, Kazimoglu C, Cilengir AH. The utility of standing knee radiographs for detection of lipohemarthrosis: comparison with supine horizontal beam radiographs. Eur Radiol 2024; 34:1104-1112. [PMID: 37594525 DOI: 10.1007/s00330-023-10163-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 06/15/2023] [Accepted: 07/16/2023] [Indexed: 08/19/2023]
Abstract
OBJECTIVES Lipohemarthrosis is a key finding in acute trauma patients and indicates an intra-articular fracture. The horizontal beam lateral radiography with supine position is known to be the best technique to demonstrate knee lipohemarthrosis. Our main purpose was to compare the sensitivity of supine and standing lateral knee radiographs to detect lipohemarthrosis. METHODS In our retrospective study, consecutive patients with lipohemarthrosis on computed tomography of the knee between October 2019 and September 2021 were included. Fractured bone, the presence of lipohemarthrosis, and image quality in both standing and supine anteroposterior and lateral knee radiographs were evaluated. Interobserver reliability of the three observers was calculated. Fisher exact chi-square and z-proportion tests were used to compare lateral and anteroposterior knee radiographs. Krippendorff's Alpha and Kappa coefficients were used for inter-observer agreement. RESULTS A total of 61 patients (38 men [62.3%], 23 women [37.7%]; mean age, 43 years ± 17 [standard deviation]) were included. The most common type of fracture was isolated tibial fractures (n = 32; 52.5%). The sensitivity of showing lipohemarthrosis of standing lateral knee radiographs (95.5%) was higher than supine lateral radiographs (38.5%) (p < 0.001). While non-optimal image quality did not affect lipohemarthrosis detection on lateral radiographs (p > 0.99), it caused a significant decrease in the diagnosis of lipohemarthrosis on anteroposterior radiographs (p = 0.036). We found a good-excellent interobserver agreement in lipohemarthrosis detection. CONCLUSIONS Standing lateral radiographs have higher sensitivity than supine lateral radiographs in detecting lipohemarthrosis and are beneficial for detecting lipohemarthrosis which indicates the presence of occult-evident intraarticular fracture in patients with knee trauma. CLINICAL RELEVANCE STATEMENT Standing lateral knee radiographs offer a useful method for reducing the misdiagnosis of the occult intra-articular fractures by showing the fat-fluid leveling more clearly. Its advantages may be more prominent when the advanced imaging modalities are limited. KEY POINTS • Fat-fluid level (lipohemarthrosis) is an important radiographic sign to assess patients with acute trauma. It almost always indicates an intra-articular fracture. • Our retrospective study results support that lipohemarthrosis sign could be observed more frequently in standing lateral knee radiographs than in supine lateral radiographs. • Knee trauma patients, when available, should be evaluated with standing lateral radiographs for the diagnosis of lipohemarthrosis.
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Affiliation(s)
- Ozgur Tosun
- Department of Radiology, Near East University Medical Faculty, Lefkosa, North Cyprus, Turkey.
| | - Kazim Ayberk Sinci
- Department of Radiology, Izmir Katip Celebi University Ataturk Training and Research Hospital, Izmir, Turkey
| | - Tayfun Bacaksiz
- Department of Orthopedics and Traumatology, Izmir Katip Celebi University Ataturk Training and Research Hospital, Izmir, Turkey
| | | | - Cemal Kazimoglu
- Department of Orthopedics and Traumatology, Izmir Katip Celebi University Ataturk Training and Research Hospital, Izmir, Turkey
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Schwartz K, Krishnasarma R, Snyder E, Pruthi S, Johnstone L, Foust A, Sarma A. Spontaneous splenic rupture in a neonate: a case report and literature review. Emerg Radiol 2024; 31:117-122. [PMID: 38231379 DOI: 10.1007/s10140-024-02199-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 01/03/2024] [Indexed: 01/18/2024]
Abstract
Splenic rupture in a neonate is a rare but potentially fatal condition that may trigger evaluation for child abuse. It is a diagnosis of exclusion that has been reported in the surgical literature but may be underrecognized by pediatric radiologists. We report a case of a newborn with an unremarkable prenatal, delivery, and nursery course who presented with anemia, abdominal distension, and lethargy. Abdominal ultrasound with Doppler and computed tomography (CT) of the head, cervical spine, chest, abdomen, and pelvis without contrast showed findings of splenic rupture and anoxic brain injury. An extensive workup for traumatic, infectious, coagulopathic, and congenital etiologies was unrevealing, leading to a presumptive diagnosis of spontaneous splenic rupture in a neonate.
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Affiliation(s)
- Kyle Schwartz
- Vanderbilt University Medical Center, Nashville, TN, USA.
- Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, TN, USA.
- Vanderbilt University School of Medicine, Nashville, TN, USA.
| | - Rekha Krishnasarma
- Vanderbilt University Medical Center, Nashville, TN, USA
- Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, TN, USA
- Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Elizabeth Snyder
- Vanderbilt University Medical Center, Nashville, TN, USA
- Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, TN, USA
- Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Sumit Pruthi
- Vanderbilt University Medical Center, Nashville, TN, USA
- Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, TN, USA
- Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Lindsey Johnstone
- Vanderbilt University Medical Center, Nashville, TN, USA
- Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, TN, USA
- Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Alexandra Foust
- Vanderbilt University Medical Center, Nashville, TN, USA
- Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, TN, USA
- Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Asha Sarma
- Vanderbilt University Medical Center, Nashville, TN, USA
- Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, TN, USA
- Vanderbilt University School of Medicine, Nashville, TN, USA
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Möller S, Seif Amir Hosseini A, Emami A, Langheinrich A, Sehmisch S, Hoffmann R, Schweigkofler U. [Comparison of planimetric CT‑based volumetry with simplified models for determining the size of intrapelvic hematomas due to pelvic fractures in emergency room diagnostics]. Unfallchirurgie (Heidelb) 2024; 127:126-134. [PMID: 37306758 DOI: 10.1007/s00113-023-01324-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/28/2023] [Indexed: 06/13/2023]
Abstract
BACKGROUND Bleeding in the pelvis can lead to a circulatory problem. The widely used whole-body computed tomography (WBCT) scan in the context of treatment in the trauma resuscitation unit (TRU) can give an idea of the source of bleeding (arterial vs. venous/osseous); however, the volume determination of an intrapelvic hematoma by volumetric planimetry cannot be used for a quick estimation of the blood loss. Simplified measurement techniques using geometric models should be used to estimate the extent of bleeding complications. OBJECTIVE To determine whether simplified geometric models can be used to quickly and reliably determine intrapelvic hematoma volume in fractures type Tile B/C during emergency room diagnostics or whether the time-consuming planimetric method must always be used. MATERIAL AND METHODS Retrospectively, 42 intrapelvic hemorrhages after pelvic fractures Tile B + C (n = 8:B, 34:C) at two trauma centers in Germany were selected (66% men, 33% women; mean age 42 ± 20 years) and the CT scans obtained during the initial trauma scan were analyzed in more detail. The CT datasets of the included patients with 1-5 mm slice thickness were available for analysis. By area labelling (ROIs) of the hemorrhage areas in the individual slice images, the volume was calculated by CT volumetrically. Comparatively, volumes were calculated using simplified geometric figures (cuboid, ellipsoid, Kothari). A correction factor was determined by calculating the deviation of the volumes of the geometric models from the planimetrically determined hematoma size. RESULTS AND DISCUSSION The median planimetric bleeding volume in the total collective was 1710 ml (10-7152 ml). Relevant pelvic bleeding with a total volume > 100 ml existed in 25 patients. In 42.86% the volume was overestimated in the cuboid model and in 13 cases (30.95%) there was a significant underestimation to the planimetrically measured volume. Thus, we excluded this volume model. In the models ellipsoid and measuring method according to Kothari, an approximation to the planimetrically determined volume could be achieved with a correction factor calculated via a multiple linear regression analysis. The time-saving and approximate quantification of the hematoma volume using a modified ellipsoidal calculation according to Kothari makes it possible to assess the extent of bleeding in the pelvis after trauma if there are signs of a C-problem. This measurement method, as a simple reproducible metric, could be embedded in trauma resuscitation units (TRU) in the future.
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Affiliation(s)
- S Möller
- , In den Weingärten 5, 65719, Hofheim am Taunus, Deutschland.
- BG Unfallklinik Frankfurt am Main gGmbH, Friedberger Landstraße 430, 60389, Frankfurt am Main, Deutschland.
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Srisombut T, Ittipanichpong P, Arjkongharn N, Tangon D, Kreesang R, Kemchoknatee P. Factors predictive of poor visual outcome in indirect traumatic optic neuropathy: A retrospective cohort study. Injury 2024; 55:111238. [PMID: 38091645 DOI: 10.1016/j.injury.2023.111238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 11/16/2023] [Accepted: 11/24/2023] [Indexed: 01/29/2024]
Abstract
INTRODUCTION The gold standard treatment for indirect traumatic optic neuropathy (ITON) has not yet been conclusively established, and it is essential to gain an understanding of visual prognosis and to counsel patients regarding the predictive risk factors of poor visual outcomes. Currently, there is limited information regarding ITON in Thai populations; therefore, this study aimed to determine the risk factors of poor visual outcome in patients with this condition. METHODS A retrospective review was conducted of all ITON cases diagnosed at Rajavithi Hospital and Sawanpracharak Hospital between January 2016 and December 2022 in order to determine clinical characteristics and evaluate associated risk factors of poor visual prognosis using binary logistic regression analysis. RESULTS The mean age of this cohort of 101 patients was 36.17 years, with a male predominance of 73.3 %. Motor vehicle accidents were the most common cause of ITON, with a statistically significant 79.2 % of cases. The patients were categorized into an "improved group" of 29 patients and an "unimproved group" of 72. The unimproved group had a significantly older mean age and poorer initial visual acuity of 20/200 (p-values 0.001 and p < 0.001 respectively). There was no significant difference between Computed Tomography (CT) findings in the two groups. The improved group had significantly better visual acuity (VA) at 1-month and final follow-up visit than the unimproved group (both p < 0.001). Differences between gender, Glasgow coma score, associated underlying diseases, and duration from trauma to intravenous glucocorticoids therapy in the two groups were not statistically significant. Multivariable logistic regression analysis identified patient age of 40 years or more (Odds ratio (OR) 3.447, 95 % CI, 1.085-10.955, p = 0.036) and poor baseline VA (OR 6.628, 95 % Confidence Interval (CI), 2.308-19.036, p < 0.001) as significant risk factors for poor visual outcome in ITON patients. CONCLUSIONS No clear benefit was found of intravenous glucocorticoids in treatment of ITON. Patients aged 40 years or more and/or with poor baseline visual status should be advised that they are at increased risk of poor final visual outcomes.
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Affiliation(s)
- Thansit Srisombut
- Department of Surgery, Sawanpracharak Hospital, 3 Attakavee, Pak Nam Pho, Mueang Nakhon Sawan, Nakhon Sawan, 60000, Thailand
| | - Paradee Ittipanichpong
- Department of Ophthalmology, Sawanpracharak Hospital, 3 Attakavee, Pak Nam Pho, Mueang Nakhon Sawan, Nakhon Sawan, 60000, Thailand
| | - Niracha Arjkongharn
- Department of Ophthalmology, Rangsit University, Rajavithi Hospital, 2, Phaya Thai Rd, Thung Phaya Thai, Ratchathewi, 10400, Thailand
| | - Duanghathai Tangon
- Faculty of Medicine, Rangsit University, Rajavithi Hospital, 2, Phaya Thai Rd, Thung Phaya Thai, Ratchathewi, Bangkok, 10400, Thailand
| | - Rinrada Kreesang
- Department of Surgery, Sawanpracharak Hospital, 3 Attakavee, Pak Nam Pho, Mueang Nakhon Sawan, Nakhon Sawan, 60000, Thailand
| | - Parinee Kemchoknatee
- Department of Ophthalmology, Rangsit University, Rajavithi Hospital, 2, Phaya Thai Rd, Thung Phaya Thai, Ratchathewi, 10400, Thailand.
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Arora SK, Jana M, Seth R. Unusual case of 'scorbutic proptosis'. BMJ Case Rep 2024; 17:e253380. [PMID: 38296501 PMCID: PMC10831456 DOI: 10.1136/bcr-2022-253380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2024] Open
Abstract
Proptosis is a frequent presenting symptom/sign of many paediatric malignancies. Acute-onset proptosis is an ophthalmic emergency that can endanger vision if not treated promptly. Appropriate treatment must be instituted only after investigating for the underlying aetiology. Here, we report a developmentally delayed boy in middle childhood who presented with recent onset bilateral proptosis. Clinical examination followed by radiological evaluation suggested scurvy to be the underlying cause and vitamin C supplementation led to prompt reversal of proptosis. The relevant literature has been reviewed and presented here to apprise the paediatric oncologists about this rare but easily treatable cause of proptosis.
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Affiliation(s)
- Shilpa Khanna Arora
- Pediatrics, Dr Ram Manohar Lohia Hospital and Atal Bihari Vajpayee Institute of Medical Sciences, New Delhi, India
| | - Manisha Jana
- Radiodiagnosis, All India Institute of Medical Sciences (AIIMS), NewDelhi, India
| | - Rachna Seth
- Pediatrics, All India Institute of Medical Sciences, New Delhi, India
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Klamfoth J, Koroscil M. Spontaneous Pneumomediastinum Secondary to Undiagnosed Asthma in Military Adult. Mil Med 2024; 189:e433-e438. [PMID: 37525947 DOI: 10.1093/milmed/usad263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 05/10/2023] [Accepted: 07/11/2023] [Indexed: 08/02/2023] Open
Abstract
Spontaneous pneumomediastinum (SPM) is a rare but described complication of exercise-induced bronchoconstriction (EIB), more commonly observed in children with asthma. We present a 23-year-old active duty military male and avid distance runner who developed progressive radiating retrosternal chest pain preceded by wheezing and coughing paroxysm. A chest computed tomography revealed extensive pneumomediastinum. SPM results from increased intrathoracic pressure with alveolar rupture and subsequent tracking of air between fascial planes. Like most cases of SPM, our patient remained hemodynamically stable and responded well to conservative therapies with complete resolution. After thorough evaluation, undiagnosed asthma was determined to be the inciting etiology. The patient is now well controlled and symptom free on a daily low-dose inhaled corticosteroid without SPM reoccurrence. In young adult patients presenting with SPM, EIB and asthma should be considered on the differential diagnosis as appropriate medical therapy will improve symptoms and reduce risk of reoccurrence.
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Affiliation(s)
- Jeanette Klamfoth
- Internal Medicine Residency Program, Wright-Patterson AFB Medical Center, Dayton, OH 45433, USA
| | - Matthew Koroscil
- Pulmonary and Critical Care, Wright-Patterson AFB Medical Center, Dayton, OH 45433, USA
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Yokota M, Okada T, Asaeda M, Iida T, Tanada S, Tuji S, Nigami T. Effect of Intrathecal Urokinase Infusion on Cerebral Vasospasm After Aneurysmal Subarachnoid Hemorrhage. World Neurosurg 2024; 181:e678-e684. [PMID: 37898263 DOI: 10.1016/j.wneu.2023.10.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 10/22/2023] [Accepted: 10/22/2023] [Indexed: 10/30/2023]
Abstract
BACKGROUND Vasospasm following an aneurysmal subarachnoid hemorrhage (SAH) causes serious neurological complications, despite surgical clipping of the aneurysm. Intrathecal urokinase (UK) infusion has been shown to effectively prevent symptomatic vasospasm in patients who have undergone endovascular obliteration of the ruptured aneurysms. OBJECTIVE To investigate whether intrathecal UK infusion can prevent symptomatic vasospasm in patients undergoing surgical or endovascular treatment. METHODS A total of 90 patients with severe aneurysmal SAH were enrolled and assigned to a surgical neck clipping (n = 56) or an endovascular coil embolization (n = 34) groups. After treatment, UK infusion from the lumbar drain was repeated in 32 patients in the surgical neck clipping group (group B) and all in the endovascular coil embolization group (group C) until complete resolution of the SAH was observed on computed tomography. The remaining 24 of the surgical neck clipping group, without UK infusion, were assigned to group A. RESULTS Symptomatic vasospasm occurred in 7 (29.2%) patients in group A, 2 (6.3%) in group B, and none in group C (group A vs. group B [P = 0.02]; group B vs. group C [P = 0.14]). Excellent clinical outcomes (modified Rankin score, 0 or 1) were observed in 37.5%, 59.4%, and 76.5% of patients in group A, B, and C, respectively (group A vs. group B [P = 0.11]). CONCLUSION Clearance of SAH via intrathecal UK infusion significantly reduced symptomatic vasospasm in patients in both UK groups, resulting in better clinical outcomes.
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Affiliation(s)
- Masayuki Yokota
- Department of Neurosurgery, Kyoritsu Hospital, Kawanishi, Hyogo, Japan.
| | - Takuya Okada
- Department of Anesthesiology, School of Medicine, Kobe University, Kobe, Hyogo, Japan
| | - Masahiro Asaeda
- Department of Neurosurgery, Kyoritsu Hospital, Kawanishi, Hyogo, Japan
| | - Tomoko Iida
- Department of Neurosurgery, Kyoritsu Hospital, Kawanishi, Hyogo, Japan
| | - Shuichi Tanada
- Department of Neurosurgery, Kyoritsu Hospital, Kawanishi, Hyogo, Japan
| | - Shoichiro Tuji
- Department of Neurosurgery, Kyoritsu Hospital, Kawanishi, Hyogo, Japan
| | - Taishi Nigami
- Department of Neurosurgery, Kyoritsu Hospital, Kawanishi, Hyogo, Japan
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Barnsley H, Uzoukwu S, Hassan S, Borri M. The use of low dose CT scouts for MR safety screening: A multi-reader evaluation. Radiography (Lond) 2024; 30:168-175. [PMID: 38035429 DOI: 10.1016/j.radi.2023.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 10/30/2023] [Accepted: 11/03/2023] [Indexed: 12/02/2023]
Abstract
INTRODUCTION Plain film radiographs are recommended to assist in MRI safety screening of patients with unknown medical histories, especially in an emergency setting where patients might be unable to answer a safety questionnaire. This study assesses the performance of CT scout images, which have low radiation dose and are faster and easier to acquire compared to plain film radiographs, in finding and naming a range of head and body implants. METHODS A retrospective analysis of 40 CT Head and Neck (HN) scout images and 40 CT Chest, Abdomen and Pelvis (CAP) scout images was undertaken. A subset of these were chosen to include a range of common internal implants not identifiable externally to the patient. The images were assessed by three readers with varying levels of clinical experience in MRI who were asked to find and name any implants seen. RESULTS Collectively, all readers reached a sensitivity of 85 % in finding internal implants, regardless of their clinical experience or experience in reviewing CT images, and a minimum specificity of 95 %. Implants were correctly named in 74 % of the images presented. CONCLUSION CT scout images were able to reveal most of the implants included. However, clinical experience in reviewing the images enhances a reader's ability to identify the type of implant. IMPLICATIONS FOR PRACTICE In an emergency setting, imaging can be critical in the management of patients presenting with acute illnesses. In the unconscious or unresponsive patient, the use of CT scouts, where this is the only option available, could provide valuable MRI safety information prior to a scan, improving access to the MRI scan in a timely manner.
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Affiliation(s)
- H Barnsley
- Neuroradiology, King's College Hospital NHS Foundation Trust, Denmark Hill, London, SE5 9RS, UK.
| | - S Uzoukwu
- Neuroradiology, King's College Hospital NHS Foundation Trust, Denmark Hill, London, SE5 9RS, UK
| | - S Hassan
- Neuroradiology, King's College Hospital NHS Foundation Trust, Denmark Hill, London, SE5 9RS, UK
| | - M Borri
- Neuroradiology, King's College Hospital NHS Foundation Trust, Denmark Hill, London, SE5 9RS, UK.
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Gambardella M, Smaldone M, Iazzetta F, Corbisiero MC, Graviero G, Coppola GM. Preoperative CT diagnosis of perforated Meckel's diverticulitis in a young patient: a case report. J Basic Clin Physiol Pharmacol 2024; 35:93-97. [PMID: 38015811 DOI: 10.1515/jbcpp-2023-0237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 11/11/2023] [Indexed: 11/30/2023]
Abstract
OBJECTIVES Meckel's diverticulum (MD) is a common asymptomatic congenital intestinal anomaly. Clinical manifestations of MD can occur in about 4 % of cases by the presentation of its complications, generally intestinal occlusion, bleeding, and diverticular inflammation. MD's complications are challenging preoperative diagnoses, as manifest with clinical symptoms that overlap with those of other acute non-traumatic abdominal diseases. Thus, in the emergency setting, abdominal computed tomography (CT) represents an essential tool for the correct diagnosis of complicated MD. CASE PRESENTATION We present a case of a preoperative CT diagnosis of perforated Meckel's diverticulitis in a young patient admitted to our Emergency Department complaining of acute abdominal pain. CONCLUSIONS The case highlights the importance of evaluating Meckel's diverticulum complications among the differential diagnoses of acute non-traumatic abdominal pain and the high sensitivity of CT in assessing their presence in the proper clinical setting.
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Pittman A, Paloian N, Pan AY, Zhang L, Moyer A, Medairos R, Thakrar P, Ellison J. Use of Low-Dose Computed Tomography in Children With Nephrolithiasis: An Analysis From 2 Tertiary Pediatric Centers. Urol Pract 2024; 11:164-169. [PMID: 37914228 DOI: 10.1097/upj.0000000000000486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 10/18/2023] [Indexed: 11/03/2023]
Abstract
INTRODUCTION Although ultrasound (US) is the preferred first-line imaging for pediatric nephrolithiasis, CT may be necessary in cases of a nondiagnostic US or when US in not available. Utilization of dose reduction strategies in children undergoing CT for nephrolithiasis is not well described. We compared use of low-dose CT (LDCT) in children presenting to 2 pediatric centers. METHODS We performed a retrospective chart review of children ≤ 17 years of age presenting with suspected nephrolithiasis to 2 tertiary children's hospitals, inclusive of those referred to these centers from nonpediatric facilities between 2013 and 2019. Children were included with an index CT scan from either the pediatric or referring center while those who had prior documented CT for nephrolithiasis within the study period or missing radiation dose assessment were excluded. The primary outcome was LDCT as defined as radiation dose < 3 mGy. The primary comparator was pediatric vs outside referral center. Exploratory analysis evaluated other factors associated with LDCT, including radiation dosage as a continuous variable. RESULTS A total of 155 individuals met inclusion criteria, with 126 (81.3%) receiving standard dose and 29 (18.7%) receiving LDCT. Pediatric facilities were more likely to utilize LDCT as compared to referral centers (P < .05). Older age and higher BMI were also found to be associated with increased radiation dose exposure. CONCLUSIONS Pediatric facilities utilized LDCT more frequently, although age and BMI may also influence imaging choices. An understanding of the factors associated with dose reduction in CT will impact future efforts to explore optimum imaging stewardship in pediatric nephrolithiasis.
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Affiliation(s)
- Ashley Pittman
- Department of Urology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Neil Paloian
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Amy Y Pan
- Division of Quantitative Health Sciences, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Liyun Zhang
- Division of Quantitative Health Sciences, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Andrea Moyer
- Department of Urology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Robert Medairos
- Department of Urology, Medical College of Wisconsin, Milwaukee, Wisconsin
- Division of Urology, Department of Surgery, Duke University School of Medicine, Durham, North Carolina
| | - Pooja Thakrar
- Division of Pediatric Radiology, Department of Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Jonathan Ellison
- Department of Urology, Medical College of Wisconsin, Milwaukee, Wisconsin
- Division of Pediatric Urology, Children's Wisconsin, Milwaukee, Wisconsin
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de La Porte des Vaux C, Sainte-Rose V, Le Turnier P, Djossou F, Nacher M, Zappa M, Epelboin L. Chest CT findings in community-acquired pneumonia due to Coxiella burnetii (Q fever) compared to Streptococcus pneumoniae, a cross sectional study in French Guiana, 2013-2017. Travel Med Infect Dis 2024; 57:102679. [PMID: 38135242 DOI: 10.1016/j.tmaid.2023.102679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 11/29/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023]
Abstract
OBJECTIVES Few and small studies previously examined chest CT-scan characteristics of Coxiella burnetii (Cb) community-acquired pneumonia (CAP). Larger studies are needed to guide physicians towards diagnosis of Q fever in case of pneumonia. METHODS We conducted a single-center retrospective observational study between 2013 and 2017. All patients with Cb or Streptococcus pneumoniae (Sp) CAP who had a chest CT-scan on admission at Cayenne Hospital (French Guiana) were included. Chest CT-scan were all analyzed by the same expert radiologist. RESULTS We included 75 patients with Cb CAP and 36 with Sp CAP. Fifty-nine percent of all patients were men (n = 66) and median age was 52 [IQR = 38-62]. Chest CT-scans of Cb CAP patients revealed 67 alveolar condensations (89 %), 52 ground-glass opacities (69 %), 30 cases of lymphadenopathy(ies) (40 %) and 25 pleural effusions (33 %). Parenchyma lesions caused by Cb were predominantly unilateral (67 %). We found high numbers of alveolar condensations in both Cb and Sp CAP (89 % and 75 %; respectively), but the presence of ground-glass opacities was significantly associated with Cb CAP (69 % versus 30 %; p < 0.01). Cb CAP were associated with more lymphadenopathies (40 % vs 17 %; p = 0.01) while Sp CAP showed more bronchial thickening (19 % versus 3 %; p < 0.01) and (micro)nodule(s) ≤1 cm (25 % vs 3 %, p < 0.01). CONCLUSIONS This large study shows that the most typical aspect of chest CT-scan in case of Cb CAP in French Guiana is a unilateral alveolar consolidation associated with ground glass opacities and lymphadenopathies. C. burnetti and S. pneumoniae both most often cause alveolar consolidations, but present some significantly different CT-scan patterns. This could help physicians through therapeutic choices.
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Affiliation(s)
- Clémentine de La Porte des Vaux
- Department of Infectious and Tropical Diseases, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana; Department of Infectious and Tropical Diseases, Hôpital Universitaire Necker-Enfants malades, Paris, France.
| | - Vincent Sainte-Rose
- Department of Microbiology, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana
| | - Paul Le Turnier
- Department of Infectious and Tropical Diseases, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana
| | - Félix Djossou
- Department of Infectious and Tropical Diseases, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana
| | - Mathieu Nacher
- CIC INSERM 1424, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana
| | - Magaly Zappa
- Department of Radiology, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana
| | - Loïc Epelboin
- Department of Infectious and Tropical Diseases, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana; CIC INSERM 1424, Centre Hospitalier Andrée Rosemon, Cayenne, French Guiana
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Emami P, Gaudreau K, Little MP, Lee C, Moroz B, Boreham DR, Thome C. Assessment of Cataract Risk after Diagnostic Head CT Scan Radiation Exposure in Ontario, Canada. Radiat Res 2024; 201:1-6. [PMID: 38014578 DOI: 10.1667/rade-23-00179.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 11/03/2023] [Indexed: 11/29/2023]
Abstract
Ionizing radiation is one of the known risk factors for cataract development, however, there is still debate regarding the level of risk after low dose exposures. One of the largest sources of radiation exposure to the lens of the eye is diagnostic CT scans. The aim of this study was to examine whether ionizing radiation associated with head CT scans increases cataract risk in residents of Ontario, Canada. Data were collected from January 1, 1994 to December 31, 2015 (22 years) from anonymized Ontario Health Insurance Plan (OHIP) medical records for over 16 million subjects. A lens dose was estimated for each CT scan using the National Cancer Institute dosimetry system for CT (NCICT) program combined with Canada-specific CTDIvol data. Multivariate Cox proportional hazards analysis was performed with cataract extraction surgery as the primary outcome and lens dose as the main variable of interest, with inclusion of various medical and demographic covariates. Lag periods of 3, 5 and 7 years were incorporated. When lens dose was treated as a continuous variable, hazard ratios (per 100 mGy) ranged from 0.82 (0.80-0.84) to 1.10 (1.09-1.11) depending on the lag period. As a secondary analysis, when individuals were binned based on their total cumulative dose, no significant dose response pattern was observed in the low dose region. Overall, within the bounds of this study, the data do not support an increased risk of vision impairing cataracts after diagnostic head CT scan radiation exposure.
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Affiliation(s)
- Pirouz Emami
- Department of Physics & Astronomy, McMaster University, Hamilton, ON, Canada
| | | | - Mark P Little
- National Cancer Institute, National Institute of Health, Bethesda, Maryland
| | - Choonsik Lee
- National Cancer Institute, National Institute of Health, Bethesda, Maryland
| | - Brian Moroz
- Computing and Software Solution for Science, LLC., Bethany Beach, Delaware
| | - Douglas R Boreham
- Medical Sciences Division, NOSM University, Sudbury, ON, Canada
- School of Natural Sciences, Laurentian University, Sudbury, ON, Canada
| | - Christopher Thome
- Medical Sciences Division, NOSM University, Sudbury, ON, Canada
- School of Natural Sciences, Laurentian University, Sudbury, ON, Canada
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Bernier MO, Hubert DLP, Michel C. [Risks of radiodiagnostic examinations in children]. Rev Prat 2024; 74:69-73. [PMID: 38329259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
RISKS OF RADIODIAGNOSTIC EXAMINATIONS IN CHILDREN. The question of cancer risk associated with diagnostic medical exposure during childhood is important in view of the sharp increase in the use of radiological examinations, particularly computed tomography (CT), since the 2000s. Moreover, children represent a population particularly sensitive to ionizing radiation. Although conventional radiology examinations do not seem to be associated with an increased risk of cancer, several epidemiological studies, including some with high statistical power, show an increased risk of leukemia and brain tumors in children exposed to CT scans. These results reinforce the importance of the principles of radiation protection already applied daily in radiology, based on the justification of procedures, substitution as far as possible by techniques that do not expose patients to ionizing radiations (ultrasound and magnetic resonance imaging) and, if the use of CT scanners remains essential, systematic optimization of the doses delivered.
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Affiliation(s)
- Marie-Odile Bernier
- Laboratoire d'épidémiologie, Institut de radioprotection et de sûreté nucléaire (IRSN)
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Hendrick RE, Smith RA. Benefit-to-radiation-risk of low-dose computed tomography lung cancer screening. Cancer 2024; 130:216-223. [PMID: 37909872 DOI: 10.1002/cncr.34855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 03/30/2023] [Accepted: 04/14/2023] [Indexed: 11/03/2023]
Abstract
BACKGROUND The US National Lung Screening Trial (NLST) and Dutch-Belgian NELSON randomized controlled trials have shown significant mortality reductions from low-dose computed tomography (CT) lung cancer screening (LCS). NLST, ITALUNG, and COSMOS trials have provided detailed dosimetry data for LCS. METHODS LCS trial mortality benefit results, organ dose and effective dose data, and Biological Effects of Ionizing Radiation, Report VII (BEIR VII) organ dose-to-cancer-mortality risk data are used to estimate benefit-to-radiation-risk ratios of the NLST, ITALUNG, and COSMOS trials. Data from those trials also are used to estimate benefit-to-radiation-risk ratios for longer-term LCS corresponding to scenarios recommended by United States Preventive Services Task Force and the American Cancer Society. RESULTS Including only screening doses, NLST benefit-to-radiation-risk ratios are 12:1 for males, 19:1 for females, and 16:1 overall. Including both screening and estimated follow-up doses, benefit-to-radiation-risk ratios for NLST are 9:1 for males, 13:1 for females, and 12:1 overall. For the ITALUNG trial, the benefit-to-radiation-risk ratio is 58-63:1. For the COSMOS trial, assuming sex-specific mortality benefits like those of the NELSON trial, the benefit-to-radiation-risk ratio is 23:1. Assuming a conservative 20% mortality benefit, annual screening in people 50-79 years old with a 20+ pack-year history of smoking has benefit-to-radiation-risk ratios of 23:1 (with follow-up doses adding 40% to screening doses) to 29:1 (with follow-up adding 10%) based on COSMOS dose data. CONCLUSIONS Based on linear, no threshold BEIR VII dose-risk estimates, benefit-to-radiation-risk ratios for LCS are highly favorable. Results emphasize the importance of using modern CT technologies, maintaining low diagnostic follow-up rates, and minimizing both screening and diagnostic follow-up doses. PLAIN LANGUAGE SUMMARY The benefits of lung cancer screening significantly outweigh estimates of future harms associated with exposure to radiation during screening and diagnostic follow-up examinations. Our findings emphasize the importance of lung cancer screening practices using state-of-the-art computed tomography scanners and specialized low-dose lung screening and diagnostic follow-up techniques.
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Affiliation(s)
- R Edward Hendrick
- Department of Radiology, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, Colorado, USA
| | - Robert A Smith
- Early Cancer Detection Science Department, American Cancer Society, Kennesaw, Georgia, USA
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Choffel L, Kleinclauss F, Balssa L, Barkatz J, Lecheneaut M, Guichard G, Frontczak A. Surgical complications and graft survival in kidney transplant recipients according to CT-scans evaluation. Fr J Urol 2024; 34:102543. [PMID: 37858380 DOI: 10.1016/j.purol.2023.09.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 09/24/2023] [Accepted: 09/28/2023] [Indexed: 10/21/2023]
Abstract
INTRODUCTION Obesity is a risk factor for significant surgical complications following kidney transplantation. We examined morphometric parameters other than the body mass index (BMI) that could predict surgical complications and determine their impact on graft survival. MATERIALS Kidney transplantations performed at our center between 2012 and 2019 were retrospectively evaluated. Data for visceral adipose tissue (VAT), subcutaneous adipose tissue, psoas surface, abdominal perimeter (AP), and vessel-to-skin distance (VSK) were collected from pre-transplant computed tomography (CT) scans. The primary outcome was the occurrence of surgical complications within 1 year of transplantation; the secondary outcome was graft survival. RESULTS We included 321 (88%) of 364 kidney transplant recipients, of which 154 (46.5%) patients experienced some form of surgical complication in the 1st year of follow-up. Univariate analysis revealed that higher VAT (P=0.004), VSK (P=0.007), and AP (P=0.01) values were potential risk factors for early postoperative morbidity. However, none of these factors were significant in the multivariate analysis. Concerning the secondary outcome, while the univariate analysis identified higher VAT (P=0.001) value as a risk factor, in the multivariate analysis only delayed graft function demonstrated a significant impact on graft survival (P=0.002). CONCLUSIONS Although morphological parameters showed greater accuracy in predicting surgical complications in univariate analysis, these results were not significant in multivariate analysis. Moreover, these factors were not significantly associated with graft survival. Therefore, routine application of analyses based on these parameters, regardless of BMI, may not be useful. LEVEL OF EVIDENCE: 5
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Affiliation(s)
- L Choffel
- Department of Urology, Andrology and Renal Transplantation, University Hospital of Besançon, 3, boulevard A-Fleming, 25030 Besançon, France.
| | - F Kleinclauss
- Department of Urology, Andrology and Renal Transplantation, University Hospital of Besançon, 3, boulevard A-Fleming, 25030 Besançon, France; University of Franche-Comté, 25000 Besançon, France
| | - L Balssa
- Department of Urology, Andrology and Renal Transplantation, University Hospital of Besançon, 3, boulevard A-Fleming, 25030 Besançon, France
| | - J Barkatz
- Department of Urology, Andrology and Renal Transplantation, University Hospital of Besançon, 3, boulevard A-Fleming, 25030 Besançon, France
| | - M Lecheneaut
- Department of Urology, Andrology and Renal Transplantation, University Hospital of Besançon, 3, boulevard A-Fleming, 25030 Besançon, France
| | - G Guichard
- Department of Urology, Andrology and Renal Transplantation, University Hospital of Besançon, 3, boulevard A-Fleming, 25030 Besançon, France
| | - A Frontczak
- Department of Urology, Andrology and Renal Transplantation, University Hospital of Besançon, 3, boulevard A-Fleming, 25030 Besançon, France; University of Franche-Comté, 25000 Besançon, France
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Kunychka M, Váňa J, Žáček M, Chromčiková M. Acute mesenteric ischemia - a persistent problem. Rozhl Chir 2024; 102:228-235. [PMID: 38286651 DOI: 10.33699/pis.2023.102.6.228-235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2024]
Abstract
Acute mesenteric ischemia is a disease with a relatively low incidence (0,02-0,9% of acute surgical hospitalizations) but a very high mortality rate which can reach up to 100% without early revascularization. Given the above, prompt and accurate diagnosis and subsequent surgical intervention is the cornerstone of treatment and essential to reduce the high mortality rate. Early revascularization can reduce overall mortality by up to 50%. Treatment of acute mesenteric ischemia requires the cooperation of gastrointestinal surgeons, vascular surgeons and interventional radiologists. Thorough clinical examination, contrast computed tomography performed at the initial stage, and the current possibilities of interventional radiology are the keys to improving the results of treatment of acute mesenteric ischemia. The purpose of this paper is to refresh knowledge in the management of acute mesenteric ischemia and summarize the most up-to-date information on the diagnosis and treatment of this disease.
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Tokoyoda T, Inagaki T, Aoki Y, Okamoto T, Nakajima T, Teramoto K. Obturator Hernia in a Patient Undergoing Hemodialysis. Intern Med 2024; 63:97-100. [PMID: 36927970 PMCID: PMC10824643 DOI: 10.2169/internalmedicine.1388-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 01/20/2023] [Indexed: 03/18/2023] Open
Abstract
Obturator hernia is a rare condition that commonly affects frail older women. A 54-year-old woman presented to our hospital with left hip joint pain. She had suffered a left pubic bone fracture and commenced maintenance hemodialysis. Pelvic computed tomography (CT) showed an incarcerated small intestine through the left obturator foramen, while abdominal CT showed marked intestinal dilatation. She underwent emergency laparotomy, and the incarcerated small intestine was found to be necrotic. Partial small intestinal resection and bilateral obturator hernioplasty were performed. Because obturator hernia is a potentially fatal condition, early detection and treatment are important.
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Affiliation(s)
| | | | - Yuki Aoki
- Department of Nephrology, Nagoya Ekisaikai Hospital, Japan
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50
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Saba L, Cau R, Murgia A, Nicolaides AN, Wintermark M, Castillo M, Staub D, Kakkos SK, Yang Q, Paraskevas KI, Yuan C, Edjlali M, Sanfilippo R, Hendrikse J, Johansson E, Mossa-Basha M, Balu N, Dichgans M, Saloner D, Bos D, Jager HR, Naylor R, Faa G, Suri JS, Costello J, Auer DP, Mcnally JS, Bonati LH, Nardi V, van der Lugt A, Griffin M, Wasserman BA, Kooi ME, Gillard J, Lanzino G, Mikhailidis DP, Mandell DM, Benson JC, van Dam-Nolen DHK, Kopczak A, Song JW, Gupta A, DeMarco JK, Chaturvedi S, Virmani R, Hatsukami TS, Brown M, Moody AR, Libby P, Schindler A, Saam T. Carotid Plaque-RADS: A Novel Stroke Risk Classification System. JACC Cardiovasc Imaging 2024; 17:62-75. [PMID: 37823860 DOI: 10.1016/j.jcmg.2023.09.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 09/06/2023] [Accepted: 09/12/2023] [Indexed: 10/13/2023]
Abstract
BACKGROUND Carotid artery atherosclerosis is highly prevalent in the general population and is a well-established risk factor for acute ischemic stroke. Although the morphological characteristics of vulnerable plaques are well recognized, there is a lack of consensus in reporting and interpreting carotid plaque features. OBJECTIVES The aim of this paper is to establish a consistent and comprehensive approach for imaging and reporting carotid plaque by introducing the Plaque-RADS (Reporting and Data System) score. METHODS A panel of experts recognized the necessity to develop a classification system for carotid plaque and its defining characteristics. Using a multimodality analysis approach, the Plaque-RADS categories were established through consensus, drawing on existing published reports. RESULTS The authors present a universal classification that is applicable to both researchers and clinicians. The Plaque-RADS score offers a morphological assessment in addition to the prevailing quantitative parameter of "stenosis." The Plaque-RADS score spans from grade 1 (indicating complete absence of plaque) to grade 4 (representing complicated plaque). Accompanying visual examples are included to facilitate a clear understanding of the Plaque-RADS categories. CONCLUSIONS Plaque-RADS is a standardized and reliable system of reporting carotid plaque composition and morphology via different imaging modalities, such as ultrasound, computed tomography, and magnetic resonance imaging. This scoring system has the potential to help in the precise identification of patients who may benefit from exclusive medical intervention and those who require alternative treatments, thereby enhancing patient care. A standardized lexicon and structured reporting promise to enhance communication between radiologists, referring clinicians, and scientists.
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Affiliation(s)
- Luca Saba
- Department of Radiology, University of Cagliari, Cagliari, Italy.
| | - Riccardo Cau
- Department of Radiology, University of Cagliari, Cagliari, Italy
| | | | - Andrew N Nicolaides
- Vascular Screening and Diagnostic Centre, Nicosia, Cyprus; University of Nicosia Medical School, Nicosia, Cyprus; Department of Vascular Surgery, Imperial College, London, United Kingdom
| | - Max Wintermark
- Department of Neuroradiology, The University of Texas MD Anderson Center, Houston, Texas, USA
| | - Mauricio Castillo
- Department of Radiology, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Daniel Staub
- Vascular Medicine/Angiology, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Stavros K Kakkos
- Department of Vascular Surgery, University of Patras Medical School, Patras, Greece
| | - Qi Yang
- Department of Radiology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | | | - Chun Yuan
- Department of Radiology, University of Washington, Seattle, Washington, USA
| | - Myriam Edjlali
- Multimodal Biomedical Imaging Laboratory (BioMaps), Paris-Saclay University, CEA, CNRS, Inserm, Frédéric Joliot Hospital Department, Orsay, France; Department of Radiology, APHP, Paris, France
| | | | | | - Elias Johansson
- Clinical Science, Umeå University, Neurosciences, Umeå, Sweden
| | - Mahmud Mossa-Basha
- Department of Radiology, University of Washington, Seattle, Washington, USA
| | - Niranjan Balu
- Department of Surgery, University of Washington, Seattle, WA, USA
| | - Martin Dichgans
- Institute for Stroke and Dementia Research, University Hospital, LMU Munich, Munich, Germany; Munich Cluster for Systems Neurology (SyNergy), Munich, Germany; German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
| | - David Saloner
- Department of Radiology and Biomedical Imaging, University of California-San Francisco, San Francisco, California, USA
| | - Daniel Bos
- Department of Radiology and Nuclear Medicine, Erasmus MC Rotterdam, University Medical Center Rotterdam, Rotterdam, the Netherlands; Department of Epidemiology, Erasmus MC, Rotterdam, the Netherlands; Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium; Department of Clinical Epidemiology, Harvard School of Public Health, Boston, Massachusetts, USA
| | - H Rolf Jager
- Lysholm Department of Neuroradiology and the Neuroradiological Academic Unit, Department of Brain Repair and Rehabilitation, UCL Institute of Neurology, London, United Kingdom
| | - Ross Naylor
- The Leicester Vascular Institute, Glenfield Hospital, Leicester, United Kingdom
| | - Gavino Faa
- Department of Pathology, University of Cagliari, Cagliari, Italy
| | - Jasjit S Suri
- Stroke Monitoring and Diagnostic Division, AtheroPoin, Roseville, California, USA
| | - Justin Costello
- Department of Neuroradiology, Walter Reed National Military Medical Center and Uniformed Services University of Health Sciences, Bethesda, Maryland, USA
| | - Dorothee P Auer
- Radiological Sciences, Division of Clinical Neuroscience, and NIHR Nottingham Biomedical Research Centre, University of Nottingham, Nottingham, United Kingdom
| | - J Scott Mcnally
- Department of Radiology, University of Utah, Salt Lake City, Utah, USA
| | - Leo H Bonati
- Department of Neurology and Stroke Center, Department of Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Valentina Nardi
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota, USA
| | - Aad van der Lugt
- Department of Radiology and Nuclear Medicine, Erasmus MC Rotterdam, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Maura Griffin
- Vascular Screening and Diagnostic Centre, Nicosia, Cyprus
| | - Bruce A Wasserman
- Department of Radiology, University of Maryland School of Medicine and Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - M Eline Kooi
- Department of Radiology and Nuclear Medicine, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, Maastricht, the Netherlands
| | | | - Giuseppe Lanzino
- Department of Neurosurgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Dimitri P Mikhailidis
- Department of Clinical Biochemistry, Royal Free Hospital Campus, University College London School, University College London, London, United Kingdom
| | - Daniel M Mandell
- Joint Department of Medical Imaging, University Health Network, Toronto, Ontario, Canada
| | - John C Benson
- Department of Radiology Mayo Clinic, Rochester, Minnesota, USA
| | - Dianne H K van Dam-Nolen
- Department of Radiology and Nuclear Medicine, Erasmus MC Rotterdam, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Anna Kopczak
- Institute for Stroke and Dementia Research, University Hospital, LMU Munich, Munich, Germany
| | - Jae W Song
- Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Ajay Gupta
- Department of Radiology Weill Cornell Medical College, New York, New York, USA
| | - J Kevin DeMarco
- Walter Reed National Military Medical Center and Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
| | - Seemant Chaturvedi
- Department of Neurology, University of Maryland Medical Center, Baltimore, Maryland, USA
| | - Renu Virmani
- Department of Cardiovascular Pathology, CVPath Institute, Gaithersburg, Maryland, USA
| | | | - Martin Brown
- Department of Neurology and Neurosurgery, University College London Hospitals, London, United Kingdom
| | - Alan R Moody
- Department of Medical Imaging, University of Toronto, Toronto, Ontario, Canada
| | - Peter Libby
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Andreas Schindler
- Institute of Neuroradiology, University Hospital, LMU Munich, Munich, Germany
| | - Tobias Saam
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany; Die Radiologie, Rosenheim, Germany
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