Objective To summarize 828 case reports of the patients with cerebellopontine angle micrurgy and research the causes of their diseases.

摘要目的总结桥小变828例显微手术的经验，并探讨其致原因。

OBJECTIVE To discuss the applied anatomical study and clinical significance of the partial labyrinthectomy approach to the internal auditory canal (IAC) and the cerebellopontine angle (CPA).

目的探讨经部迷路切除手术到达内听道和桥小区的应用解剖及义。

Abstract: Objective To evaluate the microsurgical methods and the outcomes of retromastoid small craniotomy with bone flap replace for the treatment of large cerebellopontine angle tumors.

目的探讨大型桥小肿瘤经乳突后小骨窗开颅、骨片复位的手术方法及其治疗效果。