1 一般资料 我科1992~2002年检出结肠黑变病患者共13例，女9例，男4例，年龄60岁以上10例，60岁以下3例。病史中均有习惯性便秘并长期口服泻药史(泻药其主要成分为大黄)。便秘时服药病情得到缓解，但始终未能痊愈，故来我科进行检查。累及肠段：色素沉着累及全结肠9例，累及降 1 General Information Our department from 1992 to 2002 detected colitis mellitus patients a total of 13 cases, 9 females, 4 males, aged 60 years of age in 10 cases, 3 cases of 60 years of age. History of habitual constipation and long history of oral laxatives (laxatives its main component is rhubarb). When constipation medication to ease, but has failed to heal, it came to our department for examination. Involved in bowel: pigmentation involving the entire colon in 9 cases, involving decreased