乙状窦后入路切除听神经瘤的显微手术

The microsurgical technique of acoustic neuromas removal trans suboccipital——retrosigmoid sinus approach

目的总结经枕下乙状窦后-内听道入路显微手术切除听神经瘤的经验和技巧,以提高肿瘤的全切率和面神经的保留率。方法回顾性分析经枕下乙状窦后入路显微手术治疗的11例听神经瘤,对其手术方法和技巧进行分析总结。结果肿瘤全切率为72.7%,面神经解剖保留率为81.8%。术后无重残和死亡。结论乙状窦后入路治疗听神经瘤是一种安全有效的方法。对桥小脑角区解剖的熟悉和熟练的手术技巧是术中保留面神经的关键。

Objective To Summary the microsurgical removal experience and technique of acoustic neuromas removal transsuboceipital--retrosigmoid sinus approach, and to improve the rate of tumor removing and facial nerve preserving. Methods A retrospective analysis of 11 patients suffering from acoustic neuroma were made. The patients were made microsurgery operation, which were performed with microsurgical technique trans-suboccipital-retrosigmoid sinus approach between Jan. 2004 and December. 2006. And microsurgical methods and skill were also retrospectively analyzed. Results Total resection of the tumor was achieved microsurgically in 8 cases, the total removal rate was 72.7 %. Facial nerve was preserved in 9 eases in anatomy （81.8%）. No patient died in this series. Conclusions transsuboecipital--retrosigmoid sinus approach is safe and effective method for resection acoustic neuromas.Mastering the microsurgical anatomy and operative skills of acoustic neurinomas play an important role in resecting these tumors and preserving the nerve function.