面神经乳突段的分叉现象  

Bifurcation of the facial nerve in mastoid segment

作　　者：李健东[1] 高顺禹[2] 翟翼飞[1] 李娟[1] 

机构地区：[1]北京世纪坛医院面神经研究室,北京100038 [2]北京世纪坛医院2CT室,北京100038

出　　处：《中国耳鼻咽喉头颈外科》2007年第11期633-635,共3页Chinese Archives of Otolaryngology-Head and Neck Surgery

基　　金：首都医学发展科研基金资助项目(2002-3066)

摘　　要：目的对面神经乳突段的分叉现象进行分析,为中耳乳突手术提供解剖学资料。方法观察在我科接受面神经减压术的112例患者的乳突段面神经,统计面神经乳突段分叉的发生率。与术前颞骨的高分辨率螺旋CT对比,分析CT的诊断价值。结果5例患者的面神经乳突段有分叉现象,占手术患者的4.5%。其中4例患者术前CT确诊乳突段分叉,诊断阳性率为80%。结论面神经乳突段的分叉现象并不罕见,耳科医师对此应有警觉,避免在手术中误伤面神经的分支,颞骨高分辨率螺旋CT对发现此畸形有帮助,应列为术前常规检查。OBJECTIVE To analyze the incidence of the bifurcation of the facial nerve in mastoid segment and to give the anatomic information for mastoid surgery. METHODS From March 2005 to April 2006, there were 112 patients undergoing the decompress operations which the range included the mastoid segment. The bifurcation of the mastoid segment was recorded and compared with the preoperational High-resolution Computed tomography （HRCT） scans. RESULTS There were 5 cases with the nerve bifurcation. The incidence was 4.5 %. Four of those 5 cases were diagnosed preoperatively by HRCT scans （the accurate rate was 80 %）. CONCLUSION Bifurcation of the mastoid segment was not rare. Otologic surgeon should pay attention to this anatomic variation to avoid injuring the branch of the facial nerve. HRCT scans were useful to find this abnormality.

关 键 词：面神经 畸形 体层摄影术 X线计算机 

分 类 号：R651.3[医药卫生—外科学]