It can cause severe complications, such as brain ischemia or cervical hematorrhea incurred by rupture of aneurysm.

它可以引起严重并发症，比如大脑局部缺血或破裂产生颈部软组织出血。

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

目介绍8双侧颈内-后交通显微手术,对其显微手术方法、方式及手术时机等进行探讨。

Results Aneurysms from anterior communicating artery and posterior communicating artery, which were not huge aneurysms, were easier to rupture. 32%of ruptured aneurysms were multilobe.

结果出血性多位于前、后交通，无巨大型，约32%表现为分叶或多房状。