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  • Title: Endoscopic-Assisted Median Aperture Approach for Resection of Fourth Ventricular Tumor and Confirmation of Patency of Cerebral Aqueduct Using an Adjustable-Angle Endoscope: Technical Case Report.
    Author: Austerman R, Lucas J, Kammen A, Zada G.
    Journal: Oper Neurosurg (Hagerstown); 2017 Apr 01; 13(2):293-296. PubMed ID: 28927218.
    Abstract:
    BACKGROUND AND IMPORTANCE: Open microsurgical approaches to the roof of the fourth ventricle via a telovelar approach typically require cerebellar retraction and/or splitting of the vermis and may be associated with postoperative neurological morbidities. In this case report and technical note, we describe the use of an adjustable-angle endoscope inserted into the median aperture via suboccipital craniotomy, resulting in enhanced visualization of the roof of the fourth ventricle and cerebral aqueduct and maximal safe tumor resection. CLINICAL PRESENTATION: A 49-yr-old woman with obstructive hydrocephalus and a fourth ventricular mass that was not fully visible with the use of an operative microscope. CONCLUSION: Direct visualization of the roof of the fourth ventricle, including the superior medullary velum and cerebral aqueduct, can be facilitated with an adjustable angle endoscope inserted into the median aperture via suboccipital craniotomy to minimize the degree of telovelar dissection and vermis splitting.
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