Methods:7 patients were treated with microsurgical operation by retrosigmoid sinus approach.
方法：采用乙状窦后进路显微外科方法治疗7例跨颅中后窝巨大胆脂瘤。
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Conclusion Undergoing retrosigmoid approach one can succeed to get hign rate of total acoustic neuroma removal, facial and hearing preservation.
结论枕下乙状窦后经内听道入路的听神经显微手术，能够取得较好的肿瘤全切除率和面听神经功能保留率。
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Conclusion The VNT via retrosigmoid approach is the wide adopted operation which is a convenient and safe technique for controlling and eliminating the vertigo in Meniere's disease.