肛管、直肠恶性黑色素瘤较少见。1972～1990年2月我科共收治6例。 一、临床资料 男2例,女4例。平均年龄58.5岁(47～76)。临床症状:便血、便频或脓血便;下坠感、里急后重及排大便困难;肛门部肿物或溃疡。肿瘤特点(见表)。6例均经病理诊断证实。 二、讨论 肛管、直肠恶性黑色素瘤自1875年Moore首次报道1例后,至1982年Bolivar统计 Anal canal, rectal malignant melanoma is less common. From February 1972 to February 1990, we received 6 cases in our department. First, the clinical data of 2 males and 4 females. The average age is 58.5 years (47-76). Clinical symptoms: blood in the stool, frequent frequency or pus and blood; falling sensation, tenesmus, and row of bowel problems; anal tumor or ulcer. Tumor characteristics (see table). All 6 cases were confirmed by pathological diagnosis. II. DISCUSSION Anal canal and rectal malignant melanoma Since Moore first reported 1 case in 1875, Bolivar statistics to 1982