1.Objective To summarize 828 case reports of the patients with cerebellopontine angle micrurgy and research the causes of their diseases.

1.摘要总结桥小脑角病变828例显微手术，探讨其病原因。

2.Objective To introduce experience of ambilateral posterior communicating aneurysms(PcoAA)that treated by micrurgy, and discussed its operating modus and operating juncture.

2.绍8例双侧颈内动脉-后交通动脉瘤显微手术,对其显微手术方法、方式及手术时机等进行探讨。