经迷路切除听神经瘤并发的脑脊液漏较经枕下部进路者为多,是一个较严重问题。七十年代House采用颞肌及一大块脂肪填压硬脑膜缺损处,脑脊液漏并发率为20～35%。1982年House及Hitselberger提出改用几条脂肪填塞(0.5×3 cm)并发率有明显下降。1982年作者报告100例,脑脊液漏并发率为11%;俟后至1984年又做100例,并发率降至8%。认为并发率之高低与肿瘤大小有直接关系,与术者操作技术关系不大。本文总结此200例之经验认为,按下列手术方法可减少此并发症的发生率到5%以下。①由 Loss of cerebrospinal fluid leakage after acoustic excision of acoustic neuroma is more serious than transcerebral approach. This is a more serious problem. In the 1970s, House used a diaphragm and a large piece of fat to fill the dural defect, and the cerebrospinal fluid leakage rate was 20 to 35%. In 1982, House and Hitselberger proposed to use several fat packing (0.5×3 cm) with a significant decrease in the rate of concurrency. In 1982, the authors reported 100 cases with a cerebrospinal fluid leakage concurrency rate of 11%. From late September to 1984, 100 cases were performed, and the concurrent rate dropped to 8%. The level of concurrency is considered to be directly related to the size of the tumor and has little to do with the operator’s operating technique. This article summarizes the experience of this 200 cases that the following surgical methods can reduce the incidence of this complication to 5% or less. 1 by