分析了１１３例桥小脑角池（ＣＰＡ）占位性病变的ＣＴ表现。其中以听神经瘤（８６／１１３）、脑膜瘤（１５／１１３）和胆脂瘤（５／１１３）较常见。听神经瘤常表现为不均一强化肿块，其内常有不规则低密度囊变坏死区，内听道常扩大破坏；脑膜瘤常呈均一强化肿块，与岩椎关系密切；胆脂瘤多为外形不规则的均一低密度灶，无强化。讨论了ＣＰＡ占位性病变的鉴别诊断问题。 The CT findings of 113 lesions of the cerebellopontine angle (CPA) lesions were analyzed. Among them, acoustic neuroma (86/113), meningioma (15/113) and cholesteatoma (5/113) are more common. Acoustic neuroma often manifested as heterogeneous lumps, which often have irregular low-density cystic degeneration, often expand the destruction of the internal auditory canal; meningioma often showed uniform enhancement mass, and the rock close; mostly cholesteatoma Irregular uniform low density stove, no strengthening. Discussed the differential diagnosis of CPA lesions.