Endoscope-Assisted Cerebellopontine Angle Surgery

作     者：YANG Shi-ming,YU Li-Mei,ZOU Yi-hui,YU Li-Ming,JI Fei,YANG Wei-yan,HAN Dong-yi Dept.Otolaryngology Head and Neck Surgery,Institute of Otolaryngology,Chinese PLA General Hospital,Beijing 100853 

作者机构：Dept. Otolaryngology Head and Neck Surgery Institute of Otolaryngology Chinese PLA General Hospital Beijing 100853 

出 版 物：《Journal of Otology》 (中华耳科学杂志（英文版）)

年 卷 期：2009年第4卷第1期

页      面：44-49页

学科分类：1002[医学-临床医学] 100213[医学-耳鼻咽喉科学] 10[医学] 

基　　金：supported by the grants from Hi-Tech Research and Development Program of China (863) (#2007AA02Z150) National Natural Science Foundation of China (NSFC) (#30871398, 30730040, 30571017, 30000189) granted to YSM by grants from National Eleventh Scientific Program(2007BAI18B12, 2006BAI02B06, 2007BAI 18B14) granted to HDY 

主　　题：CPA endoscope retrosigmoid approach 

摘      要：Objective To report experiences with use of otoendoscopy in cerebellopontine angle(CPA) *** Twenty five cases of CPA surgeries performed between November 2002 and December 2008 in which microscope enabled otoendoscopy was used were *** 25 cases included 19 cases of acoustic neuroma,3 cases of CPA facial nerve tumors,1 case of trigeminal neurinoma,a case of glossopharyngeal neuralgia and 1 case of hemifacial *** was used in all cases together with monitoring of brainstem auditory responses and facial *** hearing and facial nerve function were evaluated and compared to pre-operative *** Endoscopy provided improved visualization of local anatomy,revealed hidden lesions and reduced unnecessary anatomical *** resection was achieved in 18 of the 19 acoustic neuroma cases,Facial nerve anatomical integrity was preserved in all 19 *** week postoperative House-Brackmann grading was I in 3 cases,Ⅱ in 10 cases and Ⅲ in 6 *** nerve function continued to improve in some cases at 3 *** tumor resection was achieved in all 3 patients with facial *** facial nerve was sacrificed in 2 of the 3 cases with primary faciohypoglossal nerve *** nerve function was Grade Ⅱ and Grade III one year after surgery,*** the case with anatomically preserved facial nerve,postoperative facial nerve function was initially Grade Ⅲ and improved to Ⅱ at 3 *** tumor was completely resected in the trigeminal neurinoma patient with a Grade Ⅲ postoperative facial nerve function which improved Grade II three months *** of the 19 patients with acoustic neuroma retained hearing postoperatively,of these 12 maintained preoperative levels of *** hearing capacity was preserved in 2 of the 3 patients with facial nerve tumors,but lost in patients with other tumor *** neurotomy(n=1) and microvascular decompression(n=1) re