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目的 探讨小脑桥脑角表皮样囊肿的手术疗效及其临床特点。方法 分析总结自１９８５ 年６ 月至１９９８ 年１０月间经手术证实的该类患者２４例，并进行相应随访。结果 其核磁共振特点为Ｔ１－加权像上为低信号，Ｔ２ －加权像上为高信号，囊内容物与脑脊液在信号上有区别。手术入路为２１例采用枕下乳突后入路，３ 例选择颞下入路，有１５例（６２．５％ ）达到完全切除，９例全切除（３７．５％ ），术后有３例（１５％ ）复发。结论 影响完全切除的原因是该囊肿广泛生长并与重要的神经血管紧密粘连；强调长期随访的必要性。
Objective To investigate the efficacy and clinical characteristics of epidermoid cyst in cerebellar pontine angle. Methods Twenty-four patients who had been confirmed by surgery from June 1985 to October 1998 were analyzed and followed up. RESULTS The MRI features were low signals on T1-weighted images, high signals on T2-weighted images, and differences in signal content between capsule contents and cerebrospinal fluid. Surgical approach included 21 cases with suboccipital papillary approach and 3 cases with subphrenic approach. Fifteen patients (62.5%) achieved complete resection and 9 cases had total resection (37.5%). Three patients (15%) relapsed. Conclusion The reason for the effect of complete resection is that the cyst is widely grown and tightly adheres to important neurovascular vessels; emphasis is placed on the need for long-term follow-up.