The Feasibility of a Modified Exclusive Endoscopic Transcanal Transpromontorial Approach for Vestibular Schwannomas

Authors
In Seok MoonDongchul ChaSung-Il NamHyun-Jin LeeJae Young Choi
Department
Dept. of Otorhinolaryngology (이비인후과학)
Issue Date
2019
Citation
Journal of Neurological Surgery Part B : Skull Base, Vol.80(1) : 82-87, 2019
ISSN
2193-634X
Abstract
Objective We evaluated the feasibility of an exclusive endoscopic transcanal transpromontorial approach (EETTA) for the treatment of small vestibular schwannomas (VSs) limited to the internal auditory canal (IAC), and introduced a modification without external auditory canal closure. Methods Between June 2016 and June 2017, seven patients with VS underwent surgery using a modified EETTA. Treatment outcomes, including efficacy of tumor resection, preservation of function, operation time, and quality of life (QOL), were evaluated. Results The patients preoperatively exhibited Koos Grade I/II tumors and severe-toprofound hearing loss. Gross total resection was accomplished in all cases. There were no major complications, and all patients exhibited normal facial nerve function immediately after surgery. Themean follow-up period was 12.9months. The operation time (average 196.3 64.9 minutes) and hospitalization period (average 7.4 1.0 days) were favorable. Short Form-36 scores for QOL showed unremarkable results compared with previous reports. Conclusions Themodified EETTA was effective in the removal of VSs in the IAC. It can be an alternative surgical option for small VSs.
Keywords
endoscopyear canalcochlea; acoustic neuroma
URI
http://kumel.medlib.dsmc.or.kr/handle/2015.oak/41856
Appears in Collections:
1. Journal Papers (연구논문) > 1. School of Medicine (의과대학) > Dept. of Otorhinolaryngology (이비인후과학)
Keimyung Author(s)
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Full Text
https://www.thieme-connect.com/products/ejournals/abstract/10.1055/s-0038-1667061
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