Vestibular Schwannoma Atypically Invading Temporal Bone.
10.3340/jkns.2015.57.4.292
- Author:
Soo Jeong PARK
1
;
Na Rae YANG
;
Eui Kyo SEO
Author Information
1. Department of Neurosurgery, School of Medicine, Ewha Womans University, Seoul, Korea. drekseo@ewha.ac.kr
- Publication Type:Case Report
- Keywords:
Vestibular schwannoma;
Temporal bone invasion
- MeSH:
Cytochrome P-450 CYP1A1;
Facial Nerve;
Humans;
Middle Aged;
Monitoring, Intraoperative;
Neurilemmoma;
Neuroma, Acoustic*;
Temporal Bone*
- From:Journal of Korean Neurosurgical Society
2015;57(4):292-294
- CountryRepublic of Korea
- Language:English
-
Abstract:
Vestibular schwannoma (VS) usually present the widening of internal auditory canal (IAC), and these bony changes are typically limited to IAC, not extend to temporal bone. Temporal bone invasion by VS is extremely rare. We report 51-year-old man who revealed temporal bone destruction beyond IAC by unilateral VS. The bony destruction extended anteriorly to the carotid canal and inferiorly to the jugular foramen. On histopathologic examination, the tumor showed typical benign schwannoma and did not show any unusual vascularity or malignant feature. Facial nerve was severely compressed and distorted by tumor, which unevenly eroded temporal bone in surgical field. Vestibular schwannoma with atypical invasion of temporal bone can be successfully treated with combined translabyrinthine and lateral suboccipiral approach without facial nerve dysfunction. Early detection and careful dissection of facial nerve with intraoperative monitoring should be considered during operation due to severe adhesion and distortion of facial nerve by tumor and eroded temporal bone.
