To be familiar with the microanatomy of the facial nerve in CPA and IAM is h elpful for localizing the facial nerve and improve its preservation in acoustic neuroma surgery.

• 熟悉面神经在脑桥小脑角及内耳道的显微解剖 ,有助于听神经瘤术中定位面神经 ,提高面神经保留率。