大肠癌患者先后发生皮肤白斑病,未见有报导,今将作者经治3例报告如下。例1,男,57岁农民。患者于入院前一年发现粘液样血便,曾以“菌痢”而久治无效。以后便秘腹泻交替发生。肛诊:距肛门6厘米处触及围绕直肠3/4圈菜花状肿块,质中而脆,上界距肛约9厘米。指套有血迹。 Patients with colorectal cancer have leukoplakia, and no reports have been reported. The author reported 3 cases of the following cases. Example 1, male, 57-year old farmer. The patient was found to have mucoid bloody stools one year prior to hospital admission. Constipation and diarrhea alternate afterwards. Anal diagnosis: A cauliflower-like mass of 3/4 circles around the rectum was touched 6 cm from the anus, and it was medium and brittle. The upper border was about 9 cm from the anus. Fingers covered with blood.