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Taweesomboonyat C, Noiphithak R, Nimmannitya P, Sae-Heng S. Factors predicting outcomes of endoscopic endonasal approach in craniopharyngioma patients. J Neurosci Rural Pract 2024; 15:74-80. [PMID: 38476426 PMCID: PMC10927065 DOI: 10.25259/jnrp_364_2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 08/03/2023] [Indexed: 03/14/2024] Open
Abstract
Objectives Endoscopic endonasal approach (EEA) is commonly used for resection of craniopharyngioma (CP). Treatment outcomes of EEA for CP were related to numerous factors; however, they have been evaluated in few studies. The objective of this study is to investigate factors associated with the outcomes of CP following this operation. Materials and Methods The records of patients with CP, who underwent EEA at our institution from January 2014 to June 2022, were retrospectively reviewed. Surgical outcomes, including the extent of resection, visual recovery, and endocrinological outcomes, were reported. Clinical and radiographic factors were analyzed for their associations with treatment outcomes using logistic regression analyzes. Results This study cohort consisted of 28 patients with CP. Gross total resection (GTR) was achieved in 12 patients (43%). Post-operative visual status improved, stabilized, and deteriorated in 89%, 6%, and 6% of the patients, respectively. There were no patients recovered from pre-operative pituitary dysfunctions, while post-operative hypoadrenalism, hypothyroidism, and hypogonadism were found in 9 (36%), 11 (42%), and 4 (22%) patients, respectively. Post-operative permanent diabetic insipidus was found in 13 patients (50%). Greater suprasellar extension of the tumor was associated with a lower rate of GTR (P = 0.011). Diabetes mellitus (DM) was associated with poor visual recovery (P = 0.022). Larger tumor size and Puget grade 2 were associated with postoperative hypoadrenalism (P = 0.01 and 0.023, respectively). In addition, Puget grade 2 was associated with post-operative hypothyroidism (P = 0.017). Conclusion For EEA in CP, the extent of resection could be determined by suprasellar extension of the tumor. DM was a poor predicting factor for visual recovery, while larger tumors and Puget grade 2 had a higher risk of post-operative hypopituitarism.
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Affiliation(s)
- Chin Taweesomboonyat
- Department of Surgery, Division of Neurosurgery, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand
| | - Raywat Noiphithak
- Department of Surgery, Division of Neurosurgery, Faculty of Medicine, Thammsat University Hospital, Thammasat University, Pathumthani, Thailand
| | - Pree Nimmannitya
- Department of Surgery, Division of Neurosurgery, Faculty of Medicine, Thammsat University Hospital, Thammasat University, Pathumthani, Thailand
| | - Sakchai Sae-Heng
- Department of Surgery, Division of Neurosurgery, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand
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Dao Trong P, Jesser J, Schneider T, Unterberg A, Beynon C. Interracial anatomical differences in the transsphenoidal approach to the sellar region. Br J Neurosurg 2023; 37:1006-1009. [PMID: 33956553 DOI: 10.1080/02688697.2020.1834506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 10/06/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVE Injury to vascular structures such as the internal carotid artery (ICA) is a rare but catastrophic complication of minimally invasive transsphenoidal surgery. Thorough preoperative planning, and knowledge of anatomical landmarks, such as the intercarotid distance (ICD) reduce this risk. Numerous anatomical studies have been conducted regarding the transsphenoidal approach, but none have taken racial disparities into account. METHODS Since differences of the cranium, especially of the skull base exist, we sought to analyze anatomical differences of the sellar region in thin sliced T2-weighted MRI scans of 187 (87 male and 100 female) Asian, African American and Caucasian patients provided by the 'Human Connectome Project' (HCP). RESULTS We found significant differences in the ICD between males and females across all races. Furthermore, we found that the ICD was up to 2.4 mm smaller in the Caucasian cohort compared to the African American/Asian cohort. CONCLUSION These findings indicate that racial disparities regarding the sellar anatomy should be considered in patients undergoing pituitary surgery.
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Affiliation(s)
- Philip Dao Trong
- Department of Neurosurgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Jessica Jesser
- Department of Neuroradiology, University Hospital Heidelberg, Heidelberg, Germany
| | - Till Schneider
- Department of Neuroradiology, University Hospital Heidelberg, Heidelberg, Germany
| | - Andreas Unterberg
- Department of Neurosurgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Christopher Beynon
- Department of Neurosurgery, University Hospital Heidelberg, Heidelberg, Germany
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Yi Chen B, Perchyonok Y, Kam J, Lee S, Gonsalvo G. Feasibility of transsphenoidal approach for hypothalamic biopsy based on a radiological evaluation of subchiasmatic corridor dimension. J Clin Neurosci 2023; 116:44-47. [PMID: 37619513 DOI: 10.1016/j.jocn.2023.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 07/30/2023] [Accepted: 08/10/2023] [Indexed: 08/26/2023]
Abstract
BACKGROUND Surgical access to hypothalamic pathologies can be challenging. Recent case series demonstrate that the transsphenoidal approach to the hypothalamus can be safe and effective, however, may not be feasible in all patients. This study aims to investigate the feasibility of the endonasal transsphenoidal suprasellar subchiasmatic (ETSS) approach to the hypothalamus through a radiological evaluation of the subchiasmatic corridor dimension in an adult population. METHODS A retrospective review of magnetic resonance imaging of the brain was performed on 164 consecutive adult patients at our institution, of which 100 patients were deemed eligible for inclusion. Measurements were obtained at the two narrowest points along the subchiasmatic corridor: the subchiamastic window, which is the face of the subchiasmatic corridor and the midpoint window, which is located in the middle of the subchiasmatic corridor. Based on defined parameters, including the subchasmiatic window width (SW), subchiasmatic window height (SH), midpoint window width (MW), and midpoint window height (MH), patients were dichotomised into groups: patients with subchiasmatic corridor measurements any dimension of less than 3 mm, or patients with dimensions greater than or equal to 3 mm. RESULTS A total of 72 (72%) of the study population had dimensions of equal to or greater than 3 mm throughout the entirety of the subchiasmatic corridor, making hypothalamic biopsy feasible through the ETSS route for these patients. CONCLUSION Based on a radiological evaluation of the subchiasmatic corridor dimension in an Australian adult population, the majority of the population are suitable to undergo an endonasal transsphenoidal suprasellar subchiasmatic biopsy of the hypothalamus.
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Affiliation(s)
- Bi Yi Chen
- Department of Neurosurgery, Austin Health, 145 Studley Road, Heidelberg, VIC 3084, Australia; Department of Neurosurgery, Royal Melbourne Hospital, 300 Grattan Street, Parkville, VIC 3050, Australia.
| | - Yuliya Perchyonok
- Department of Radiology, Austin Health, 145 Studley Road, Heidelberg, VIC 3084, Australia
| | - Jeremy Kam
- Department of Neurosurgery, Royal Melbourne Hospital, 300 Grattan Street, Parkville, VIC 3050, Australia
| | - Stewart Lee
- Department of Ear, Nose and Throat, Austin Health, 145 Studley Road, Heidelberg, VIC 3084, Australia
| | - Gus Gonsalvo
- Department of Neurosurgery, Austin Health, 145 Studley Road, Heidelberg, VIC 3084, Australia
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Spille DC, Vorona E, Catalino MP, Reuter G, Beckers A, Holling M, Fava A, Stummer W, Laws ER, Suero-Molina E. Vascular anomalies in patients with growth hormone-secreting pituitary adenomas: illustrative case report and systematic review of the literature. Pituitary 2023; 26:132-143. [PMID: 36508085 PMCID: PMC9908726 DOI: 10.1007/s11102-022-01291-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/18/2022] [Indexed: 12/14/2022]
Abstract
PURPOSE Endonasal resection is the first-line treatment for patients harboring growth hormone (GH)-secreting pituitary adenomas. The complexity of the parasellar neurovascular structures makes pre-operative diagnostic imaging essential to understanding the anatomy of this region. We aimed to describe vascular anomalies in acromegalic patients and emphasize their relevance for surgery and preoperative planning. METHODS A systematic review following the PRISMA statement was performed in July 2021. RESULTS Thirty-three studies were evaluated. Elevated GH and insulin-like growth factor-1 (IGF-1) levels are linked to the occurrence of cardiovascular risk factors. This is attributed to endothelial dysfunction, mainly caused by changes in flow-mediated dilatation (FMD), which is probably the main cause of vascular anomalies in acromegaly. The occurrence of protrusions of the internal carotid artery (ICA) (35-53%), a narrow intercarotid distance, and an asymmetrical course was described. In 13-18% of acromegalic patients, the presence of an intracerebral aneurysm could be reported (incidence in the general population:0.8-1.3%). The selected studies were however performed with a small patient sample (range:1-257). We present a case report of a 57y/o male patient with anomalies of the ICA ("kissing carotid arteries") harboring a GH-secreting adenoma, which was resected via an endoscopic endonasal approach. CONCLUSIONS There is an association between acromegaly and endothelial dysfunction, which increases cardiovascular risk factors and vascular anomalies. Preoperative vascular imaging, e.g., CT angiography, should be implemented as a standard to identify patients at risk and estimate surgical morbidity. However, no evidence-based recommendations exist so far, so future studies are necessary.
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Affiliation(s)
- Dorothee Cäcilia Spille
- Department of Neurosurgery, University Hospital of Münster, Albert-Schweitzer-Campus 1, A1, 48149, Münster, Germany
| | - Elena Vorona
- Department of Medicine B of Gastroenterology, Hepatology, Endocrinology and Clinical Infectiology Division for Endocrinology and Diabetes, 48149, Münster, Germany
| | | | - Gilles Reuter
- Department of Neurosurgery, University Hospital of Liège, Liège, Belgium
| | - Albert Beckers
- Centre Hospitalier Universitaire de Liège, Liège, Belgium
| | - Markus Holling
- Department of Neurosurgery, University Hospital of Münster, Albert-Schweitzer-Campus 1, A1, 48149, Münster, Germany
| | - Arianna Fava
- Department of Neurosurgery, I.R.C.C.S. Neuromed, Pozzilli, IS, Italy
| | - Walter Stummer
- Department of Neurosurgery, University Hospital of Münster, Albert-Schweitzer-Campus 1, A1, 48149, Münster, Germany
| | - Edward R Laws
- Department of Neurosurgery, Brigham and Women's Hospital, Boston, MA, USA
| | - Eric Suero-Molina
- Department of Neurosurgery, University Hospital of Münster, Albert-Schweitzer-Campus 1, A1, 48149, Münster, Germany.
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Hug NF, Purger DA, Moss HE, Dodd RL. Pituitary macroadenoma causing vision loss in Wyburn-Mason syndrome: illustrative case. JOURNAL OF NEUROSURGERY. CASE LESSONS 2022; 4:CASE22236. [PMID: 36572974 PMCID: PMC9795825 DOI: 10.3171/case22236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 11/10/2022] [Indexed: 12/27/2022]
Abstract
BACKGROUND Wyburn-Mason syndrome (WMS) is a neurocutaneous disorder consisting of vascular malformations of the brain, eye, and skin. These include characteristically high-flow intracranial and intraorbital arteriovenous malformations (AVMs) that present commonly with visual deterioration, headache, and hemiplegia. Complete removal of these lesions is challenging. Most patients are followed closely, and intervention occurs only in the setting of worsening symptoms secondary to AVM growth or hemorrhage. Here the authors present the first known case of a patient with WMS and a pituitary macroadenoma. OBSERVATIONS A 62-year-old man with a 30-year history of WMS with right basal ganglia and orbital AVMs and right eye blindness presented for new-onset left-sided vision loss. A pituitary adenoma was identified compressing the optic chiasm and left optic nerve. Magnetic resonance imaging and digital subtraction angiography studies were obtained for surgical planning, and the patient underwent an endoscopic transnasal transsphenoidal resection, with significant postoperative vision improvement. LESSONS Given the variable presentation and poor characterization of this rare syndrome, patients with WMS presenting with new symptoms must undergo evaluation for growth and hemorrhage of known AVMs, as well as new lesions. Further, in patients undergoing intracranial surgery, extensive preoperative imaging and planning are crucial for safe and successful procedures.
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Affiliation(s)
| | | | | | - Robert L. Dodd
- Departments of Neurosurgery, ,Neuroradiology, Stanford University School of Medicine, Stanford, California
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Sharma RK, Irace AL, Overdevest JB, Gudis DA. Carotid artery injury in endoscopic endonasal surgery: Risk factors, prevention, and management. World J Otorhinolaryngol Head Neck Surg 2022; 8:54-60. [PMID: 35619937 PMCID: PMC9126167 DOI: 10.1002/wjo2.7] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 10/19/2021] [Indexed: 11/11/2022] Open
Abstract
Objective Endoscopic approaches for sinus and skull base surgery are increasing in popularity. The objective of this narrative review is to characterize risk factors for internal carotid artery injury in endoscopic endonasal surgery (EES), highlight preventative measures, and illustrate key management principles. Data Sources Comprehensive literature review. Methods Relevant literature was reviewed using PubMed/MEDLINE. Results Carotid artery injury in EES is rare, with most studies reporting an incidence below 0.1%. Anatomic aberrancies, wide dissection margins, as well as specific provider and hospital factors, may increase the risk of injury. Multidisciplinary teams, comprehensive preoperative imaging, patient risk assessment, and formal training in vascular emergencies may reduce the risk. Management protocols should emphasize proper visualization of the injury site, fluid replacement, rapid packing, angiography, and endovascular techniques to achieve hemostasis. Conclusions While EES is a relatively safe procedure, carotid artery injury is a devastating complication that warrants full consideration in surgical planning. Important preventative measures include identifying patients with notable risk factors and obtaining preoperative imaging. Multidisciplinary teams and management protocols are ultimately necessary to reduce morbidity and mortality. Internal carotid artery (ICA) injury is a rare complication of endoscopic endonasal surgery. Risk factors for ICA injury may include vascular anatomic variants, invasive pathology, and prior radiation therapy. Surgical team preparation and experience are key to successful management of operative complications.
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Affiliation(s)
- Rahul K. Sharma
- Department of Otolaryngology‐Head and Neck Surgery Columbia University Irving Medical Center, NewYork‐Presbyterian Hospital New York New York USA
- Department of Otolaryngology‐Head and Neck Surgery Vanderbilt University Medical Center Nashville Tennessee USA
| | - Alexandria L. Irace
- Department of Otolaryngology‐Head and Neck Surgery Columbia University Irving Medical Center, NewYork‐Presbyterian Hospital New York New York USA
| | - Jonathan B. Overdevest
- Department of Otolaryngology‐Head and Neck Surgery Columbia University Irving Medical Center, NewYork‐Presbyterian Hospital New York New York USA
| | - David A. Gudis
- Department of Otolaryngology‐Head and Neck Surgery Columbia University Irving Medical Center, NewYork‐Presbyterian Hospital New York New York USA
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7
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Li L, Carrau RL, Prevedello DM, Yang B, Rowan N, Han D, London NR. Intercarotid artery distance in the pediatric population: Implications for endoscopic transsphenoidal approaches to the skull base. Int J Pediatr Otorhinolaryngol 2021; 140:110520. [PMID: 33261860 DOI: 10.1016/j.ijporl.2020.110520] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 11/22/2020] [Accepted: 11/22/2020] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Comprehensive quantitative evaluation of the intercarotid artery distance (ICD) in the pediatric population has not been sufficiently explored. This study aims to measure the minimal ICDs at multiple levels of the skull base to assess changes in the ICD during development. METHODS Measurement of the ICDs between the paired paraclival, parasellar, and paraclinoid segments of the internal carotid artery (ICA) was performed on coronal MRI from 540 patients ranging from 0 to 17 years old (n = 30 for each age). Comparison of these indices in the very young (0-5 years, Group 1) and young (6-17 years, Group 2) patients, and assessment of the degree of sphenoid sinus pneumatization was employed. RESULTS The narrowest ICD was located at the paraclinoid ICAs in the vast majority of cases (89.44%). When comparing the ICDs in very young age patients with the ICDs of 17 years old subjects, a statistically significant difference was found at the paraclival (ages 0-5), parasellar (ages 0-2), and paraclinoid (ages 0-4) ICDs (p < 0.05). Comparison of the ICDs between the intergroups (Group 1 and 2) also demonstrated a statistically significant difference (p < 0.0001). Pneumatization of the sphenoid sinus was initially noted to start at 3 years of age, and there were no patients with a non-pneumatized sphenoid sinus identified after 7 years of age in our cohort. CONCLUSION Measurement of ICDs at multiple levels provides a valuable reference for EEA procedures in the pediatric population. While the ICD may be largely stable in the pediatric population after 5 years of age, additional anatomic factors may restrict transsphenoidal access in very young patients (0-5 years).
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Affiliation(s)
- Lifeng Li
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Ricardo L Carrau
- Department of Otolaryngology-Head & Neck Surgery, The James Cancer Hospital at the Wexner Medical Center of the Ohio State University, Columbus, OH, USA; Department of Neurological Surgery, The James Cancer Hospital at the Wexner Medical Center of the Ohio State University, Columbus, OH, USA
| | - Daniel M Prevedello
- Department of Otolaryngology-Head & Neck Surgery, The James Cancer Hospital at the Wexner Medical Center of the Ohio State University, Columbus, OH, USA; Department of Neurological Surgery, The James Cancer Hospital at the Wexner Medical Center of the Ohio State University, Columbus, OH, USA
| | - Bentao Yang
- Department of Radiology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Nicholas Rowan
- Department of Otolaryngology-Head & Neck Surgery, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Demin Han
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Nyall R London
- Department of Otolaryngology-Head & Neck Surgery, Johns Hopkins School of Medicine, Baltimore, MD, USA.
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8
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Raghu ALB, Flower HD, Statham PFX, Brennan PM, Hughes MA. Sellar Remodeling after Surgery for Nonfunctioning Pituitary Adenoma: Intercarotid Distance as a Predictor of Recurrence. J Neurol Surg B Skull Base 2020; 81:579-584. [PMID: 33134026 DOI: 10.1055/s-0039-1693700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 06/03/2019] [Indexed: 10/26/2022] Open
Abstract
Introduction As they grow, pituitary adenoma can remodel the sella turcica and alter anatomical relationships with adjacent structures. The intercarotid distance (ICD) at the level of the sella is a measure of sella width. The purpose of this study was to (1) assess how ICD changes after transsphenoidal surgery and (2) explore whether the extent of ICD change is associated with tumor recurrence. Methods A retrospective analysis of preoperative and postoperative coronal magnetic resonance imaging (MRI) scans was carried out by two independent assessors on patients who underwent transsphenoidal surgery for nonfunctioning pituitary macroadenomas. Preoperative tumor volume and any change in ICD following surgery were recorded and compared between groups. Logistic regression models of recurrence were generated. Results In 36 of 42 patients, ICD fell after surgery (mean = 1.8 mm) and six cases were static. At time of follow-up (mean = 77 months), 25 had not required further intervention and 17 had undergone second surgery or radiosurgery. In patients in whom no further intervention has yet been necessary, the postoperative reduction in ICD was significantly smaller than in those who required repeat intervention (1.1 vs. 2.7 mm respectively, p < 0.01). ICD decrease was weakly correlated with tumor volume ( r = 0.35). ICD decrease was a significant predictor of recurrence (odds ratio [OR] = 3.15; 95% confidence interval [CI]: 1.44-6.87), largely independent of tumor volume. Conclusion For most patients, ICD falls following surgical excision of a nonfunctioning pituitary macroadenoma. A greater reduction in ICD postsurgery appears to predict recurrence. Change in ICD shows promise as a radiographic tool for prognosticating clinical course after surgery.
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Affiliation(s)
- Ashley L B Raghu
- Edinburgh Medical School, University of Edinburgh, Edinburgh, Edinburgh, United Kingdom of Great Britain and Northern Ireland.,Nuffield Department of Surgical Sciences, University of Oxford, Oxford, United Kingdom of Great Britain and Northern Ireland
| | - Hannah D Flower
- Edinburgh Medical School, University of Edinburgh, Edinburgh, Edinburgh, United Kingdom of Great Britain and Northern Ireland
| | - Patrick F X Statham
- Department of Clinical Neurosciences, NHS Lothian, Edinburgh, Edinburgh, United Kingdom of Great Britain and Northern Ireland
| | - Paul M Brennan
- Edinburgh Medical School, University of Edinburgh, Edinburgh, Edinburgh, United Kingdom of Great Britain and Northern Ireland.,Department of Clinical Neurosciences, NHS Lothian, Edinburgh, Edinburgh, United Kingdom of Great Britain and Northern Ireland
| | - Mark A Hughes
- Edinburgh Medical School, University of Edinburgh, Edinburgh, Edinburgh, United Kingdom of Great Britain and Northern Ireland.,Department of Clinical Neurosciences, NHS Lothian, Edinburgh, Edinburgh, United Kingdom of Great Britain and Northern Ireland
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Graham MT, Huang J, Creighton FX, Lediju Bell MA. Simulations and human cadaver head studies to identify optimal acoustic receiver locations for minimally invasive photoacoustic-guided neurosurgery. PHOTOACOUSTICS 2020; 19:100183. [PMID: 32695578 PMCID: PMC7364163 DOI: 10.1016/j.pacs.2020.100183] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 04/10/2020] [Accepted: 04/14/2020] [Indexed: 05/18/2023]
Abstract
Real-time intraoperative guidance during minimally invasive neurosurgical procedures (e.g., endonasal transsphenoidal surgery) is often limited to endoscopy and CT-guided image navigation, which can be suboptimal at locating underlying blood vessels and nerves. Accidental damage to these critical structures can have severe surgical complications, including patient blindness and death. Photoacoustic image guidance was previously proposed as a method to prevent accidental injury. While the proposed technique remains promising, the original light delivery and sound reception components of this technology require alterations to make the technique suitable for patient use. This paper presents simulation and experimental studies performed with both an intact human skull (which was cleaned from tissue attachments) and a complete human cadaver head (with contents and surrounding tissue intact) in order to investigate optimal locations for ultrasound probe placement during photoacoustic imaging and to test the feasibility of a modified light delivery design. Volumetric x-ray CT images of the human skull were used to create k-Wave simulations of acoustic wave propagation within this cranial environment. Photoacoustic imaging of the internal carotid artery (ICA) was performed with this same skull. Optical fibers emitting 750 nm light were inserted into the nasal cavity for ICA illumination. The ultrasound probe was placed on three optimal regions identified by simulations: (1) nasal cavity, (2) ocular region, and (3) 1 mm-thick temporal bone (which received 9.2%, 4.7%, and 3.8% of the initial photoacoustic pressure, respectively, in simulations). For these three probe locations, the contrast of the ICA in comparative experimental photoacoustic images was 27 dB, 19 dB, and 12 dB, respectively, with delay-and-sum (DAS) beamforming and laser pulse energies of 3 mJ, 5 mJ, and 4.2 mJ, respectively. Short-lag spatial coherence (SLSC) beamforming improved the contrast of these DAS images by up to 15 dB, enabled visualization of multiple cross-sectional ICA views in a single image, and enabled the use of lower laser energies. Combined simulation and experimental results with the emptied skull and >1 mm-thick temporal bone indicated that the ocular and nasal regions were more optimal probe locations than the temporal ultrasound probe location. Results from both the same skull filled with ovine brains and eyes and the human cadaver head validate the ocular region as an optimal acoustic window for our current system setup, producing high-contrast (i.e., up to 35 dB) DAS and SLSC photoacoustic images within the laser safety limits of a novel, compact light delivery system design that is independent of surgical tools (i.e., a fiber bundle with 6.8 mm outer diameter, 2 mm-diameter optical aperture, and an air gap spacing between the sphenoid bone and fiber tips). These results are promising toward identifying, quantifying, and overcoming major system design barriers to proceed with future patient testing.
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Affiliation(s)
- Michelle T. Graham
- Department of Electrical and Computer Engineering, Johns Hopkins University
- Corresponding author.
| | - Jiaqi Huang
- Department of Biomedical Engineering, Johns Hopkins University
| | | | - Muyinatu A. Lediju Bell
- Department of Electrical and Computer Engineering, Johns Hopkins University
- Department of Biomedical Engineering, Johns Hopkins University
- Department of Computer Science, Johns Hopkins University
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Jayashankar N. Endoscopic Transnasal Transsphenoidal Pituitary Surgery in Acromegaly: Anatomical Variations and Surgical Considerations. Neurol India 2020; 68:579-580. [PMID: 32643666 DOI: 10.4103/0028-3886.289017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- N Jayashankar
- Department of Otorhinolaryngology and Skull Base Surgery, Nanavati Superspeciality Hospital, Mumbai, Maharashtra, India
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11
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Quon JL, Kim LH, Hwang PH, Patel ZM, Grant GA, Cheshier SH, Edwards MSB. Transnasal endoscopic approach for pediatric skull base lesions: a case series. J Neurosurg Pediatr 2019; 24:246-257. [PMID: 31200365 DOI: 10.3171/2019.4.peds18693] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 04/15/2019] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Transnasal endoscopic transsphenoidal approaches constitute an essential technique for the resection of skull base tumors in adults. However, in the pediatric population, sellar and suprasellar lesions have historically been treated by craniotomy. Transnasal endoscopic approaches are less invasive and thus may be preferable to craniotomy, especially in children. In this case series, the authors present their institutional experience with transnasal endoscopic transsphenoidal approaches for pediatric skull base tumors. METHODS The authors retrospectively reviewed pediatric patients (age ≤ 18 years) who had undergone transnasal endoscopic transsphenoidal approaches for either biopsy or resection of sellar or suprasellar lesions between 2007 and 2016. All operations were performed jointly by a team of pediatric neurosurgeons and skull base otolaryngologists, except for 8 cases performed by one neurosurgeon. RESULTS The series included 42 patients between 4 and 18 years old (average 12.5 years) who underwent 51 operations. Headache (45%), visual symptoms (69%), and symptoms related to hormonal abnormalities (71%) were the predominant presenting symptoms. Improvement in preoperative symptoms was seen in 92% of cases. Most patients had craniopharyngiomas (n = 16), followed by pituitary adenomas (n = 12), Rathke cleft cysts (n = 4), germinomas (n = 4), chordomas (n = 2), and other lesion subtypes (n = 4). Lesions ranged from 0.3 to 6.2 cm (median 2.5 cm) in their greatest dimension. Gross-total resection was primarily performed (63% of cases), with 5 subsequent recurrences. Nasoseptal flaps were used in 47% of cases, fat grafts in 37%, and lumbar drains in 47%. CSF space was entered intraoperatively in 15 cases, and postoperative CSF was observed only in lesions with suprasellar extension. There were 8 cases of new hormonal deficits and 3 cases of new cranial nerve deficits. Length of hospital stay ranged from 1 to 61 days (median 5 days). Patients were clinically followed up for a median of 46 months (range 1-120 months), accompanied by a median radiological follow-up period of 45 months (range 3.8-120 months). Most patients (76%) were offered adjuvant therapy. CONCLUSIONS In this single-institution report of the transnasal endoscopic transsphenoidal approach, the authors demonstrated that this technique is generally safe and effective for different types of pediatric skull base lesions. Favorable effects of surgery were sustained during a follow-up period of 4 years. Further refinement in technology will allow for more widespread use in the pediatric population.
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Affiliation(s)
| | | | - Peter H Hwang
- 2Division of Rhinology, Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Palo Alto; and
| | - Zara M Patel
- 2Division of Rhinology, Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Palo Alto; and
| | - Gerald A Grant
- 1Department of Neurosurgery and
- 3Division of Pediatric Neurosurgery, Lucile Packard Children's Hospital, Stanford, California
| | - Samuel H Cheshier
- 1Department of Neurosurgery and
- 3Division of Pediatric Neurosurgery, Lucile Packard Children's Hospital, Stanford, California
| | - Michael S B Edwards
- 1Department of Neurosurgery and
- 3Division of Pediatric Neurosurgery, Lucile Packard Children's Hospital, Stanford, California
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Yeung W, Twigg V, Carr S, Sinha S, Mirza S. Radiological "Teddy Bear" Sign on CT Imaging to Aid Internal Carotid Artery Localization in Transsphenoidal Pituitary and Anterior Skull Base Surgery. J Neurol Surg B Skull Base 2018; 79:401-406. [PMID: 30009122 PMCID: PMC6043166 DOI: 10.1055/s-0037-1615749] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 11/19/2017] [Indexed: 10/18/2022] Open
Abstract
Objectives Internal carotid artery (ICA) injury remains a rare but potentially fatal complication of transsphenoidal pituitary or anterior skull base surgery. Preoperative imaging must be scrutinized to minimize risk. On axial computed tomography (CT), the protrusions of the ICAs into the sphenoid resemble a "teddy bear." This article aims to describe the sign, its grading system (0-2) and quantify its presence. Design Retrospective review of preoperative CT imaging. Setting Tertiary referral center in the United Kingdom. Participants One hundred patients who underwent endoscopic transsphenoidal surgery for pituitary disease were enrolled. Main Outcome Measure The presence and grading of the "teddy bear" sign were assessed on preoperative CT imaging. Results A grade 2 (strongly positive) "teddy bear" sign was identified in 40% at the level of the superior pituitary fossa, 78% at the inferior pituitary fossa, and 59% at the clivus. A grade 1 (intermediate) sign was seen in 23.5, 7.5, and 10% of cases, respectively. In 5% of cases, the sign was grade 0 at all levels-indicating poor intraoperative localization of the ICA. Conclusion The "teddy bear" sign is a useful preoperative tool for identification of anatomy predisposing patients to a higher risk of ICA injury. Those patients who have an absent or grade 0 "teddy bear" sign require extra care to ensure intraoperative localization of the ICAs which may include the use of neuronavigation or a Doppler probe. A grade 2 sign predicts good intraoperative localization of the ICA intraoperatively to inform the safe lateral limit of sellar bone resection.
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Affiliation(s)
- W. Yeung
- Department of Otorhinolaryngology, Royal Hallamshire Hospital, Sheffield, United Kingdom
| | - V. Twigg
- Department of Otorhinolaryngology, Royal Hallamshire Hospital, Sheffield, United Kingdom
| | - S. Carr
- Department of Otorhinolaryngology, Royal Hallamshire Hospital, Sheffield, United Kingdom
| | - S. Sinha
- Department of Neurosurgery, Royal Hallamshire Hospital, Sheffield, United Kingdom
| | - S. Mirza
- Department of Otorhinolaryngology, Royal Hallamshire Hospital, Sheffield, United Kingdom
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Serra C, Maldaner N, Muscas G, Staartjes V, Pangalu A, Holzmann D, Soyka M, Schmid C, Regli L. The changing sella: internal carotid artery shift during transsphenoidal pituitary surgery. Pituitary 2017; 20:654-660. [PMID: 28828722 DOI: 10.1007/s11102-017-0830-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
PURPOSE Injuries to the internal carotid artery (ICA) are potentially lethal complications in transsphenoidal surgery (TSS) for pituitary lesions. The intercarotid distance (ICD) is thus a major parameter, determining the width of the surgical corridor in TSS. The purpose of the study is to investigate changes in ICD at different levels of the ICA during and after TSS using high definition intraoperative MRI (3T-iMRI). METHODS Pre-, intra- and 3 months postoperative MRI images of 85 TSS patients were reviewed. ICD was measured at the horizontal (ICDC4h) and vertical (ICDC4v) intracavernous C4 segment as well as at the C6 segment (ICDC6). Association between ICD change at different levels and time points were compared and potential factors predicting ICD reduction were analyzed. RESULTS ICD decreased intraoperatively at all three segments of ICA by -3% (median decreases: ICDC4h: -0.5 mm, ICDC4v: -0.7 mm ICDC6: -0.4 mm). At 3 months postoperative MRI, ICD reduced by a further -4%, -2% and -4% respectively (median decreases ICDC4h: -0.7, ICDC4v: -0.4 mm, ICDC6: -0.5 mm). Postoperative narrowing in ICD occurred independent of further resection after 3T-iMRI. ICD change correlated between different levels of the ICA indicating a uniform shift perioperatively. Preoperative ICD was significantly associated with the intraoperative reduction in ICDC4v and ICDC6. CONCLUSIONS We have demonstrated a uniform narrowing in ICD at different levels of the ICA during and after TSS adenoma resection. Surgeons should be aware of this change since it determines the width of the surgical corridor and can thus influence the ease of surgery.
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Affiliation(s)
- Carlo Serra
- Department of Neurosurgery, University Hospital of Zürich, University of Zürich, Zurich, Switzerland.
| | - Nicolai Maldaner
- Department of Neurosurgery, University Hospital of Zürich, University of Zürich, Zurich, Switzerland
| | - Giovanni Muscas
- Department of Neurosurgery, Tuscany School of Neurosurgery, University of Firenze, Florence, Italy
| | - Victor Staartjes
- Department of Neurosurgery, University Hospital of Zürich, University of Zürich, Zurich, Switzerland
| | - Athina Pangalu
- Department of Neuroradiology, University Hospital of Zürich, University of Zürich, Zurich, Switzerland
| | - David Holzmann
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Zürich, University of Zürich, Zurich, Switzerland
| | - Michael Soyka
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Zürich, University of Zürich, Zurich, Switzerland
| | - Christoph Schmid
- Department of Endocrinology and Diabetes, University Hospital of Zürich, University of Zürich, Zurich, Switzerland
| | - Luca Regli
- Department of Neurosurgery, University Hospital of Zürich, University of Zürich, Zurich, Switzerland
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Kuan EC, Yoo F, Kim W, Badran KW, Heineman TE, Sepahdari AR, Bergsneider M, Wang MB. Anatomic Variations in Pituitary Endocrinopathies: Implications for the Surgical Corridor. J Neurol Surg B Skull Base 2017; 78:105-111. [PMID: 28321371 PMCID: PMC5357235 DOI: 10.1055/s-0036-1585588] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Accepted: 06/06/2016] [Indexed: 10/21/2022] Open
Abstract
Objectives/Hypotheses Functioning pituitary adenomas may produce endocrinopathies such as acromegaly and Cushing syndrome. Both conditions lead to characteristic anatomic variations as a result of hormonally induced abnormal soft tissue deposition. We evaluate the anatomic differences between acromegalics and Cushing disease patients and compare these dimensions to controls. Design Radiographic review of preoperative magnetic resonance images (MRI) of the pituitary gland. Setting Tertiary academic medical center. Participants Patients who underwent transnasal, transsphenoidal surgery for pituitary adenomas found to have acromegaly or pituitary Cushing between January 1, 2007 and September 1, 2015. A total of 15 patients with similar MRIs and no history of pituitary or sinonasal disease were selected as controls. Main Outcome Measures Dimensions assessed were intercarotid distance; carotid canal width; piriform aperture width; distance from the piriform aperture to the anterior face of the sphenoid; sphenoid sinus height, width, and length; angle from anterior nasal spine to anteroinferior face of sphenoid sinus; choanal height; and nasal cavity height at the level of the vertical segment of the middle turbinate. Sphenoid sinus pneumatization patterns were recorded. Results There were 30 acromegalics and 31 Cushing disease patients. When compared with controls, both acromegalics and Cushing disease patients had significantly wider piriform apertures and a longer distance from the piriform aperture to the anterior face of the sphenoid sinus (p < 0.05). Acromegalics had a significantly less acute angle (19 ± 3 degrees) from the anterior nasal spine to the sphenoid (p < 0.05). Cushing disease patients had significantly lower sphenoid sinus length and shorter nasal cavity height (p < 0.05). There were no differences in intercarotid distance or carotid canal width. Conclusions As acromegalics and Cushing disease patients have known anatomic variations, the skull base surgeon should be aware of these differences and adapt their techniques and approaches as needed.
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Affiliation(s)
- Edward C. Kuan
- Department of Head and Neck Surgery, David Geffen School of Medicine at the University of California, Los Angeles (UCLA) Medical Center, Los Angeles, California, United States
| | - Frederick Yoo
- Department of Head and Neck Surgery, David Geffen School of Medicine at the University of California, Los Angeles (UCLA) Medical Center, Los Angeles, California, United States
| | - Won Kim
- Department of Neurosurgery, David Geffen School of Medicine at the University of California, Los Angeles (UCLA) Medical Center, Los Angeles, California, United States
| | - Karam W. Badran
- Department of Head and Neck Surgery, David Geffen School of Medicine at the University of California, Los Angeles (UCLA) Medical Center, Los Angeles, California, United States
| | - Thomas E. Heineman
- Department of Head and Neck Surgery, David Geffen School of Medicine at the University of California, Los Angeles (UCLA) Medical Center, Los Angeles, California, United States
| | - Ali R. Sepahdari
- Department of Radiology, David Geffen School of Medicine at the University of California, Los Angeles (UCLA) Medical Center, Los Angeles, California, United States
| | - Marvin Bergsneider
- Department of Neurosurgery, David Geffen School of Medicine at the University of California, Los Angeles (UCLA) Medical Center, Los Angeles, California, United States
| | - Marilene B. Wang
- Department of Head and Neck Surgery, David Geffen School of Medicine at the University of California, Los Angeles (UCLA) Medical Center, Los Angeles, California, United States
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