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近20年来听神经纤维瘤的外科手术发生了深刻变化,成功的小肿瘤切除术,不但要求保留面神经的功能,还要试图保存听力,这方面已有个案或小宗病例报道。作者分析1978～1982年间120例听神经纤维瘤手术结果,重点是瘤体位于小脑延髓池内体积小于20mm的术后结果。在30例中有13例(43%)术后早期都保存了听力,其中2例术后不久听力大部分丧失,3～4年后失听,听力保存率为36%,听力的保存与术前听力受损程度无关。术后听力检查结果:纯音听力图2例为斜坡型(术前为7例),11例纯音阈平均提高
Surgery for neurofibromatosis has undergone profound changes in nearly 20 years. Successful small tumor resection not only requires the preservation of facial nerve functions, but also attempts to preserve hearing. Cases or small cases have been reported in this respect. The authors analyzed the results of 120 cases of acoustic neurofibroma from 1978 to 1982, focusing on the postoperative findings that the tumor volume was less than 20 mm in the cerebellar cistern. In 30 cases, 13 cases (43%) had their hearing preserved in the early postoperative period. Two of them had most of their hearing loss shortly after operation, 3 to 4 years after hearing loss and hearing preservation rate of 36% The extent of previous hearing loss has nothing to do. Postoperative auditory examination results: pure tone audiogram 2 cases of slope type (preoperative 7 cases), 11 cases of pure tone threshold increased