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

摘要目的总结角病变828例显微手术的经验，并探讨其病原因。

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

目的介绍8例双侧颈内脉-后脉瘤显微手术的经验,对其显微手术的方法、方式及手术时机等进行探讨。