枕下乙状窦后小骨窗入路切除听神经瘤62例手术体会

目的 总结枕下乙状窦后小骨窗入路切除听神经瘤的手术经验.方法 采用枕下乙状窦后小骨窗入路对62例听神经瘤进行手术切除.距乙状窦后缘内侧1.5 cm作直切口,骨窗直径2.5～3.0 cm,暴露横窦与乙状窦交汇处.对小于3 cm的肿瘤先磨开内听道,切除内听道内肿瘤并分离出内听道端面神经及前庭蜗神经后,逐步切除颅内肿瘤;对超过3 cm的肿瘤先分块切除颅内肿瘤,找到脑桥端面神经后再逐步将面神经从肿瘤上分离,最后磨开内听道,切除其内肿瘤.术毕骨瓣复位固定.结果 本组听神经瘤全切48例,次全切14例;46例面神经解剖保留,10例听力保留;脑脊液漏2例,无死亡病例.术中无一例输血,无皮下积液.结论 枕下乙状窦后小骨窗入路可提供足够的手术空间进行听神经瘤切除,明显减少了医源性损伤,具备微创性、安全性和有效性.

Acoustic neuroma resection through suboccipito-retrosigmoid keyhole approach: experiences of 62 cases

Objective To summarize the surgical experiences in acoustic neuroma resection via the suboccipito-retrosigmoid keyhole approach.Methods Sixty-two patients with acoustic neuroma received surgical tumor resection via the suboccipito-retrosigmoid keyhole approach.During the operation,a small vertical incision was made 1.5 cm medial to the posterior margin of the sigmoid sinus and a bone window of 2.5~3.0 cm in diameter was opened.For the tumors smaller than 3 cm in diameter,the internal auditory canal was dril...