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Ishida M, Gonoi W, Abe H, Shirota G, Fujimoto K, Okimoto N, Ushiku T, Abe O. Longitudinal comparison of ascites attenuation between antemortem and postmortem computed tomography. Forensic Sci Int 2021; 321:110727. [PMID: 33636473 DOI: 10.1016/j.forsciint.2021.110727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 01/02/2021] [Accepted: 02/15/2021] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To investigate the changes in ascites attenuation between antemortem (AMCT) and postmortem computed tomography (PMCT) analyses of the same subjects. METHODS Thirty-five subjects who underwent unenhanced or enhanced AMCT within 7 days before death, unenhanced PMCT, and autopsy were evaluated. In each subject, ascites attenuation was measured at similar sites on AMCT and PMCT. Attenuation changes were evaluated in 42 unenhanced AMCT/PMCT site pairs (23 subjects) and 20 enhanced AMCT/PMCT site pairs (12 subjects). Factors contributing to CT attenuation changes were also assessed, including the time interval between AMCT and PMCT, serum albumin level, estimated glomerular filtration rate, and ascites volume. RESULTS Significantly elevated CT attenuation was observed between enhanced AMCT and PMCT (12.2 ± 6.3 vs. 18.7 ± 10.4 Hounsfield units; paired t-test, p = 0.006), but not between unenhanced AMCT and PMCT (13.5 ± 8.9 vs. 13.4 ± 9.3; p = 0.554). A significant inverse association was observed between the degree of CT attenuation change and the time interval between enhanced AMCT and PMCT (Spearman's rank correlation coefficient, r = -0.56, p = 0.01). CONCLUSIONS We confirmed an elevated level of ascites attenuation on PMCT relative to AMCT in subjects who underwent enhanced AMCT shortly before death.
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Affiliation(s)
- Masanori Ishida
- Department of Radiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - Wataru Gonoi
- Department of Radiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Hiroyuki Abe
- Department of Pathology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Go Shirota
- Department of Radiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Kotaro Fujimoto
- Department of Radiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Naomasa Okimoto
- Department of Radiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Tetsuo Ushiku
- Department of Pathology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Osamu Abe
- Department of Radiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
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Lynn ET, Chen J, Wilck EJ, El-Sabrout K, Lo CC, Divino CM. Radiographic Findings of Anastomotic Leaks. Am Surg 2020. [DOI: 10.1177/000313481307900231] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Although computed tomography (CT) scans play an important role in the diagnosis and management of anastomotic leaks (AL), there is no consensus on what radiographic findings are associated with AL. The purpose of this study is to identify the most common CT scan findings associated with AL and whether the amount of extraluminal air or the density of extraluminal fluid can be correlated with the presence of an AL. A retrospective chart review of 210 patients with anastomotic leaks from 2003 to 2010 at Mount Sinai Medical Center was performed. Eighty-six patients fit our criteria and were included. All CT scans were reread by an independent radiologist not involved with patient care. Our study included 59 per cent men and 41 per cent women with a mean age of 51 years. Diagnoses included inflammatory bowel disease (53%), malignancy (21%), and diverticulitis (12%). One hundred per cent of the patients had one of three findings: extraluminal air (92%), extraluminal fluid (88%), or extravasation of contrast (32%). Eighty-one per cent (70/86) had both fluid and air simultaneously. Extraluminal air was seen in 79 patients. The estimated amounts of extraluminal air were as follows: 0 to 25 mL (49%), 26 to 500 mL (41%), 500 to 1000 mL (5%), and more than 1000 mL (5%). The Hounsfield unit (HU) measurements of the fluid ranged from 3 to 633 HUs. The most common CT findings associated with AL are pneumoperitoneum and extraluminal fluid, including extravasation of contrast, which can be seen in up to 100 per cent of patients. The amount of estimated extraluminal air and density of fluid collection have no prognostic value in predicting AL.
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Affiliation(s)
- Elizabeth T. Lynn
- Division of General Surgery, Department of Surgery, New York, New York
| | - Julia Chen
- Division of General Surgery, Department of Surgery, New York, New York
| | - Eric J. Wilck
- Department of Radiology, Mount Sinai School of Medicine, New York, New York
| | - Kerri El-Sabrout
- Division of General Surgery, Department of Surgery, New York, New York
| | - Chris C. Lo
- Division of General Surgery, Department of Surgery, New York, New York
| | - Celia M. Divino
- Division of General Surgery, Department of Surgery, New York, New York
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Hughes JR, Johnson VS, Genain MA. CT characteristics of primary splenic torsion in eight dogs. Vet Radiol Ultrasound 2020; 61:261-268. [PMID: 32077164 DOI: 10.1111/vru.12844] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 10/22/2019] [Accepted: 11/16/2019] [Indexed: 12/25/2022] Open
Abstract
Splenic torsion is a rare potentially life-threatening condition characterized by rotation of the spleen around the gastrosplenic and phrenosplenic ligaments leading to occlusion of venous drainage and arterial supply. This retrospective study describes the CT characteristics for dogs with surgically confirmed splenic torsion from 2013 to 2018 using the submissions to a large multinational teleradiology database. Eight dogs had the splenic torsion confirmed with surgery. Seven of eight cases had histology confirming congestion, hemorrhage, and necrosis, and one had concurrent myelolipoma infiltration. The CT characteristics included an enlarged (8/8), rounded (7/8), folded C-shaped spleen (8/8) with a difference of median parenchymal attenuation between pre- and postcontrast of +1.15 HU (Hounsfield units). Other common features included a mainly homogeneous parenchyma on pre- and post-contrast images (6/8), lack of subjective and objective vascular and parenchymal contrast enhancement (6/8) and free peritoneal fluid (6/8). A "whirl sign" was seen in the majority of cases (7/8) alongside a strongly hyperattenuating center (95-416 HU) on the precontrast images (5/7), which has not been previously described in the veterinary literature. Gastric position was normal in all cases. More variable CT characteristics of the confirmed torsions were attributable to suspected partial torsion and myelolipomatous infiltration. Overall, primary splenic torsion confirmed with surgery showed consistent characteristics on CT.
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Affiliation(s)
- Jonathan R Hughes
- Department of Veterinary Medicine, Queen's Veterinary School Hospital, Cambridge, UK
| | | | - Marie-Aude Genain
- Department of Veterinary Medicine, Queen's Veterinary School Hospital, Cambridge, UK
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Bonatti M, Valletta R, Zamboni GA, Lombardo F, Senoner M, Simioni M, Schifferle G, Bonatti G. Ascites relative enhancement during hepatobiliary phase after Gd-BOPTA administration: a new promising tool for characterising abdominal free fluid of unknown origin. Eur Radiol 2019; 29:2830-2836. [PMID: 30643946 DOI: 10.1007/s00330-018-5932-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 11/10/2018] [Accepted: 11/29/2018] [Indexed: 01/16/2023]
Abstract
OBJECTIVES To correlate the degree of ascites enhancement during hepatobiliary phase after gadobenate dimeglumine (Gd-BOPTA) administration with ascites aetiology. METHODS IRB-approved retrospective study, need for informed consent was waived. We included 74 consecutive ascitic patients who underwent Gd-BOPTA-enhanced liver MRI including hepatobiliary phase (HBP) images between January 2014 and December 2017. Ascites appearance on unenhanced and HBP images was classified as hypo-, iso- or hyperintense in comparison to paraspinal muscles. Ascites signal intensity on unenhanced and HBP images was measured using round ROIs and was normalised to paraspinal muscles (NSI). Normalised relative enhancement (NRE) between native phase and HBP was calculated. The results were related to ascites aetiology using Wilcoxon and Mann-Whitney tests. RESULTS On native images, ascites appeared hypointense in 95.9% of the cases and isointense in 4.1%, whereas on HBP images, it appeared hyperintense in 59.4% of the cases, isointense in 36.5% and hypointense in 4.1%. Mean ascites NSI was 0.52 on unenhanced images and 1.50 on HBP ones (p < 0.0001). Mean ascites NRE was 201 ± 133%. Ascites of non-malignant aetiology showed mean NRE of 210 ± 134%, whereas malignant ascites showed mean NRE of 92 ± 20% (p = 0.001). ROC analysis showed that a NRE < 112.5% correlates with malignant aetiology with 100% sensitivity and 83.4% specificity (LR = 5.667). NRE did not show any significant correlation with ascites thickness, eGFR and time interval between contrast administration and HBP acquisition (p > 0.05). CONCLUSIONS Ascites NRE in HBP after Gd-BOPTA administration is significantly lower in patients with ascites secondary to peritoneal carcinomatosis than in patients with non-malignant ascites. KEY POINTS • Ascites enhancement in the hepatobiliary phase after Gd-BOPTA administration may determine false positive findings when looking for biliary leaks. • Ascites enhancement in the hepatobiliary phase after Gd-BOPTA administration is lower in patients with peritoneal carcinomatosis than in patients with portal hypertension or congestive heart failure. • None of the patients with peritoneal carcinomatosis showed an ascites enhancement of more than 112% as compared with unenhanced images.
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Affiliation(s)
- Matteo Bonatti
- Department of Radiology, Bolzano Central Hospital, via Boehler 5, 39100, Bolzano, Italy.
| | - Riccardo Valletta
- Department of Radiology, Bolzano Central Hospital, via Boehler 5, 39100, Bolzano, Italy.,Department of Radiology, University of Verona, Piazzale LA Scuro 10, 37134, Verona, Italy
| | - Giulia A Zamboni
- Department of Radiology, University of Verona, Piazzale LA Scuro 10, 37134, Verona, Italy
| | - Fabio Lombardo
- Department of Radiology, Bolzano Central Hospital, via Boehler 5, 39100, Bolzano, Italy
| | - Maria Senoner
- Department of Radiology, Bolzano Central Hospital, via Boehler 5, 39100, Bolzano, Italy
| | - Mariachiara Simioni
- Department of Radiology, Bolzano Central Hospital, via Boehler 5, 39100, Bolzano, Italy.,Department of Radiology, University of Verona, Piazzale LA Scuro 10, 37134, Verona, Italy
| | - Guenther Schifferle
- Department of Radiology, Bolzano Central Hospital, via Boehler 5, 39100, Bolzano, Italy
| | - Giampietro Bonatti
- Department of Radiology, Bolzano Central Hospital, via Boehler 5, 39100, Bolzano, Italy
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Peritoneal and pleural fluids may appear hyperintense on hepatobiliary phase using hepatobiliary MR contrast agents. Eur Radiol 2018; 28:3020-3031. [PMID: 29374320 DOI: 10.1007/s00330-017-5261-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 12/06/2017] [Accepted: 12/20/2017] [Indexed: 12/18/2022]
Abstract
AIM To describe the effect of hepatobiliary-specific MR imaging contrast agent (HBCA) administration on the signal intensity of peritoneal and pleural fluid effusions on T1-weighted MR images. MATERIALS AND METHODS From October 2015 to May 2016 139 patients (mean 60±10 years old, 69 % males) with peritoneal or pleural effusions without biliary leakage who underwent HBCA-MRI (Gd-BOPTA or Gd-EOB-DTPA) at 1.5T and 3T were included from two centres. The fluid signal intensity was classified as hypo/iso/hyperintense before/after HBCA administration. The relative signal enhancement (RE) was calculated. RESULTS On hepatobiliary phase (HBP), peritoneal fluids appeared hyper/isointense in 88-100 % and pleural effusions in 100 % of the patients following Gd-BOPTA administration. All fluids remained hypointense following Gd-EOB-DTPA. The signal intensity of fluids increased with both HBCA but RE was significantly higher following Gd-BOPTA (p=0.002 to <0.001). RE was correlated with HBP acquisition time-point (r=0.42, p<0.001 and r=0.50, p=0.033 for peritoneal and pleural fluids). CONCLUSION The signal intensity of pleural and peritoneal fluids progressively increases following HBCA administration in the absence of biliary leakage. Due to its later hepatobiliary phase, this is more pronounced after Gd-BOPTA injection, leading to fluid hyperintensity that is not observed after Gd-EOB-DTPA injection. KEY POINTS • Fluids appear hyper/isointense on HBP in most patients after Gd-BOPTA injection. • Fluids remain hypointense on HBP after Gd-EOB-DTPA injection. • RE of fluids increases with time after liver-specific Gd injection. • RE of fluids is higher in patients with chronic liver disease.
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Differentiating Transudative From Exudative Ascites Using Quantitative B-Mode Gray-Scale Ultrasound Histogram. AJR Am J Roentgenol 2017; 209:313-319. [DOI: 10.2214/ajr.16.16509] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Yamada Y, Tanno J, Nakano S, Kasai T, Senbonmatsu T, Nishimura S. Clinical implications of pleural effusion in patients with acute type B aortic dissection. EUROPEAN HEART JOURNAL-ACUTE CARDIOVASCULAR CARE 2016; 5:72-81. [DOI: 10.1177/2048872615594498] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Yoshihiro Yamada
- The Department of Cardiology, International Medical Center, Saitama Medical University, Japan
| | - Jun Tanno
- The Department of Cardiology, International Medical Center, Saitama Medical University, Japan
| | - Shintaro Nakano
- The Department of Cardiology, International Medical Center, Saitama Medical University, Japan
| | - Takatoshi Kasai
- The Department of Cardiovascular Medicine and Cardiovascular Respiratory Sleep Medicine, Juntendo University Graduate School of Medicine, Japan
| | - Takaaki Senbonmatsu
- The Department of Cardiology, International Medical Center, Saitama Medical University, Japan
| | - Shigeyuki Nishimura
- The Department of Cardiology, International Medical Center, Saitama Medical University, Japan
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Avery LL, Jain VR, Cohen HW, Scheinfeld MH. High attenuation pericardial fluid on CT following cardiac catheterization. Emerg Radiol 2014; 21:381-6. [PMID: 24638997 DOI: 10.1007/s10140-014-1211-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2014] [Accepted: 03/04/2014] [Indexed: 10/25/2022]
Abstract
High-density pericardial fluid may be seen on noncontrast CT performed following cardiac catheterization (CC), raising the possibility of hemopericardium. Our goal was to determine the clinical course and associations of incidentally discovered high-attenuation pericardial fluid on noncontrast CT performed soon after CC. Hospital database search over a 7.5-year period identified 211 patients who underwent CT of the chest and/or abdomen within 60 h before or after CC, 150 having CC first. Pericardial fluid volume and attenuation as well as relevant laboratory and clinical parameters were recorded. Bivariate associations with average pericardial fluid attenuation (HUavg) were assessed. Using the 61 patients with CT before CC as controls, 44 of the patients with CC first had attenuation values greater than the mean + 2SD of 22.6 Hounsfield unit (HU) and 19 had attenuation values greater than the maximum control patient value of 39.8 HU. All patients with incidental finding of high-density pericardial fluid followed a benign course. Bivariate correlations showed time gap between CC and CT (rho = -0.50, p < 0.001), estimated glomerular filtration rate (eGFR) (rho = -0.24, p = 0.004), and female gender (median (IQR) 17.4 (13.6, 29.6) vs. 15.8 (9.9, 23.7), p = 0.02) to be associated with HUavg. In multiple linear regression analysis, only time gap and female gender were independently significantly associated with average attenuation (both p < 0.001). The finding that patients with incidentally discovered high-density pericardial fluid followed an uneventful course suggests a benign etiology such as vicarious excretion, and in patients who are otherwise stable, observation rather than immediate intervention should be considered.
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Affiliation(s)
- Laura L Avery
- Department of Radiology, Division of Emergency Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA,
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Araki T, Okada H, Araki T. Enhancement of ascites during abdominal oncological endovascular intervention without iatrogenic extravasation in patients with chronic liver disease. Clin Radiol 2013; 68:e460-6. [PMID: 23623579 DOI: 10.1016/j.crad.2013.03.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2012] [Revised: 03/06/2013] [Accepted: 03/14/2013] [Indexed: 11/17/2022]
Abstract
AIM To evaluate ascites enhancement during abdominal oncological endovascular intervention (IVR) without iatrogenic extravasation and the factors associated with enhancement of ascites. METHODS AND MATERIALS CT images were obtained using an IVR-CT system for 73 patients with chronic liver disease and ascites. The CT images were obtained at least twice during each IVR. Radiodensity values of ascites at CT were measured for the first and last CT images in each procedure. The factors evaluated for their association with elevated ascitic fluid density were age, interval from the first to the last CT scan, Child-Pugh score, albumin level, total bilirubin level, prothrombin activity, the need for transcatheter arterial chemoembolization (TACE), estimated glomerular filtration rate, total amount of contrast material (CM) per square metre of body surface area (/m(2)), amount of ascitic fluid, and the amount of CM entering the superior mesenteric artery (SMA) or coeliac artery/m(2). RESULTS The average ascitic radiodensity values for the first and last CT images were 18 and 51 HU, respectively. The percentage of patients with "significantly elevated" ascitic fluid density (≥10 HU) was 92%. Multivariate analysis showed that the total amount of CM/m(2) and the amount of ascitic fluid were significantly correlated and inversely correlated, respectively, with elevated ascitic fluid density. CONCLUSIONS Ascites enhancement without extravasation frequently occurs during abdominal oncological endovascular intervention in patients with chronic liver disease.
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Affiliation(s)
- Takuji Araki
- Department of Radiology, University of Yamanashi, University Hospital, Yamanashi, Japan.
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Risson JR, Macovei I, Loock M, Paquette B, Martin M, Delabrousse E. Cirrhotic and malignant ascites: Differential CT diagnosis. Diagn Interv Imaging 2012; 93:365-70. [DOI: 10.1016/j.diii.2012.02.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Delayed enhancement of ascites after i.v. contrast material administration at CT: time course and clinical correlation. AJR Am J Roentgenol 2009; 193:732-7. [PMID: 19696286 DOI: 10.2214/ajr.08.1929] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVE The objective of our study was to determine the prevalence and clinical predictors of delayed contrast enhancement of ascites. MATERIALS AND METHODS In this retrospective study, 132 consecutive patients with ascites who underwent repeated abdominopelvic CT examinations performed within 7 days of each other were identified. These patients included 112 patients who received and 20 who did not receive i.v. contrast material at the initial CT examination. For each examination, we recorded the CT attenuation of the ascites. For the follow-up scan, the presence of delayed enhancement of ascites was defined as an increase in CT attenuation > 10 HU over baseline. The Fisher's exact test, unpaired Student's t test, and logistic regression were used to determine predictors of delayed enhancement of ascites. RESULTS A threshold increase in the attenuation of ascites by > 10 HU or more between the initial and follow-up CT examinations occurred only when i.v. contrast material was given with the initial examination. The increased attenuation was due to delayed contrast enhancement of ascites and occurred in 15 of the 112 patients (13%). Of the 16 patients scanned less than 1 day apart, 10 (63%) showed delayed enhancement of ascites. Delayed enhancement was not observed 3 or more days after i.v. contrast material administration. For each 1 mg/dL increase in serum creatinine level, the likelihood of delayed enhancement of ascites increased (odds ratio, 2.02; 95% CI, 1.11-3.69). Multivariate logistic regression showed that a short time interval between examinations (p < 0.001), increased serum creatinine level (p < 0.001), and presence of loculated ascites (p = < 0.01) were independent predictors of the magnitude of delayed enhancement of ascites. CONCLUSION Delayed contrast enhancement of ascites occurs commonly after recent prior i.v. contrast material administration and should not be mistaken for hemoperitoneum or proteinaceous fluid such as pus.
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Abstract
Renal trauma is rare, and significant complications from renal trauma are generally rarer still occurring in less than 5% in modern series. Close follow-up of injured patients and scrupulous use of imaging, including computed tomography scan, arteriogram, or retro-grade pyelogram when appropriate, increase detection rates and establish the diagnosis in most patients. Treatment varies by etiology and may range from watchful waiting to percutaneous drainage to, in rare cases, nephrectomy.
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Affiliation(s)
- Hosam S Al-Qudah
- Department of Urology, Wayne State University School of Medicine, Detroit, MI 48201, USA
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Burn PR, Healy JC. Imaging benign peritoneal disease. IMAGING 2000. [DOI: 10.1259/img.12.1.120034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Sivit CJ. CT SCAN OF MESENTERYOMENTUM PERITONEUM. Radiol Clin North Am 1996. [DOI: 10.1016/s0033-8389(22)00513-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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