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Gregory Glauser, Tracy M. Flanders, and Omar Choudhri

This video is a presentation of technical tenets for the microsurgical clipping of a tentorial dural arteriovenous fistula presenting with thalamic venous hypertension. These cases are easily misdiagnosed and often supplied by the tentorial artery of Davidoff and Schecter. The cases shown in the video uniquely illustrate a supracerebellar infratentorial approach to identify and clip an arterialized tentorial vein utilizing intraoperative Doppler and fluorescein, with navigation and an intraoperative cerebral angiogram in a hybrid neuroangiography operative suite. Both patients were found to have thalamic edema on preoperative imaging, which significantly improved postoperatively.

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Dmitriy Petrov, Michael Spadola, Connor Berger, Gregory Glauser, Ahmad F. Mahmoud, Bert O’Malley, and Neil R. Malhotra

Chordomas are rare, locally aggressive neoplasms that develop from remnants of the notochord. The typical approach to chordomas of the clivus and axial cervical spine often limits successful en bloc resection. In this case report, authors describe the first-documented transoral approach using both transoral robotic surgery (TORS) for exposure and the Sonopet bone scalpel under navigational guidance to achieve en bloc resection of a cervical chordoma. This 27-year-old man had no significant past medical history (Charlson Comorbidity Index 0). During a trauma workup following a motor vehicle collision, a CT of the patient’s cervical spine demonstrated an incidental 2.2-cm lesion situated along the posterior aspect of the C2 vertebral body. Postoperative imaging showed successful en bloc resection with adequate placement of hardware, and the pathology report demonstrated negative resection margins. The patient tolerated the procedure well, and because of the successful en bloc resection, radiation has been deferred. At 7 months postoperatively, the patient returned to work in New York City. Contrasted MRI at 15 months postoperatively showed the patient to be disease free. This approach offers a promising way forward in the treatment of these complex tumors.

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Ian F. Caplan, Gregory Glauser, Stephen Goodrich, H. Isaac Chen, Timothy H. Lucas, John Y. K. Lee, Scott D. McClintock, and Neil R. Malhotra


Obstructive sleep apnea (OSA) is known to be associated with negative outcomes and is underdiagnosed. The STOP-Bang questionnaire is a screening tool for OSA that has been validated in both medical and surgical populations. Given that readmission after surgical intervention is an undesirable event, the authors sought to investigate, among patients not previously diagnosed with OSA, the capacity of the STOP-Bang questionnaire to predict 30-day readmissions following craniotomy for a supratentorial neoplasm.


For patients undergoing craniotomy for treatment of a supratentorial neoplasm within a multiple-hospital academic medical center, data were captured in a prospective manner via the Neurosurgery Quality Improvement Initiative (NQII) EpiLog tool. Data were collected over a 1-year period for all supratentorial craniotomy cases. An additional criterion for study inclusion was that the patient was alive at 30 postoperative days. Statistical analysis consisted of simple logistic regression, which assessed the ability of the STOP-Bang questionnaire and additional variables to effectively predict outcomes such as 30-day readmission, 30-day emergency department (ED) visit, and 30-day reoperation. The C-statistic was used to represent the receiver operating characteristic (ROC) curve, which analyzes the discrimination of a variable or model.


Included in the sample were all admissions for supratentorial neoplasms treated with craniotomy (352 patients), 49.72% (n = 175) of which were female. The average STOP-Bang score was 1.91 ± 1.22 (range 0–7). A 1-unit higher STOP-Bang score accurately predicted 30-day readmissions (OR 1.31, p = 0.017) and 30-day ED visits (OR 1.36, p = 0.016) with fair accuracy as confirmed by the ROC curve (C-statistic 0.60–0.61). The STOP-Bang questionnaire did not correlate with 30-day reoperation (p = 0.805) or home discharge (p = 0.315).


The results of this study suggest that undiagnosed OSA, as assessed via the STOP-Bang questionnaire, is a significant predictor of patient health status and readmission risk in the brain tumor craniotomy population. Further investigations should be undertaken to apply this prediction tool in order to enhance postoperative patient care to reduce the need for unplanned readmissions.

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Donald K. Detchou, Gregory Glauser, Ryan Dimentberg, Eileen Maloney Wilensky, Daniel Yoshor, and Neil R. Malhotra

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Marianne I. J. Tissot, Andre E. Boyke, Alvin Onyewuenyi, Gregory Glauser, Evalyn S. Mackenzie, Bethany J. Thach, and Donald K. E. Detchou