肛门直肠恶性黑色素瘤是一种恶性度高,预后不良的少见恶性肿瘤。国内所见报告不过数十例。我院1971年至1983年收治直肠肛管癌187例中仅见3例,占1.69%,现报告如下。例1 张某某,女,57岁。3年前开始肛门部便后有肿块脱出并出血,但肿块增大不明显,近1年迅速增大,疼痛,出血,行走或便后脱出。肛门检查:肛门口脱出一个7×5×5cm~3大小之分叶状包块,表面高低不平,溃烂出血,并有粘液附着,质较硬,位于距肛缘4cm9点处,基底部较固定。入院后行根 Anorectal malignant melanoma is a rare malignancy with a high degree of malignancy and poor prognosis. There are only dozens of reports in the country. In our hospital from 1971 to 1983, only 187 cases of rectal anal canal cancer were seen in 3 cases, accounting for 1.69%. The present report is as follows. Example 1 Zhang Mou, female, 57 years old. 3 years ago began to have a lump after prolapse of the anus and bleeding, but the increase in mass is not obvious, rapid increase in recent years, pain, bleeding, walking or prolapse after stool. Anal examination: A 7×5×5cm~3 size lobulated mass was dislodged from the anus and the surface was uneven, with ulcerative bleeding and mucus adherence. The mass was hard and located at 4cm9 from the anal verge. The basement was relatively fixed. . Rooted after admission