MethodsRetrospective analysis was unducted for the clinical manifestation,treatment and prognosis of11 cases of anorectal malignant melanoma confirmed by surgery and pathology from 1978 to 1999.

• 方法对近21年来经手术及病理证实的11例肛管直肠恶性黑色素瘤临床特征、治疗方法及预后进行回顾性分析。