病例报告男，２４岁．缘于４岁时发现口唇有密集黑色素斑点，５岁时被家人发现在排便中肛门外有脱出物，经当地检查为息肉，未引起重视．成年后反复出现间断性黑便量不多，每年约２～３次并可自行缓解．曾行纤维结肠检查示：结肠多发性息肉，遂行息肉切除术．近４ｄ来症状... Case report Male, 24 years old. Due to 4-year-old lips found dense melanin spots, 5-year-old family was found in the defecation anus outside the prolapse, the local examination for polyps, did not pay attention. Repeated intermittent after adult black stool is small, about 2 to 3 times a year and relieve itself. Have a fiberoptic examination showed: multiple colon polyps, polyp resection. Near 4d to symptoms ...