结肠病变检查的主要手段之一是结肠镜检查 ,既往我们常用的方法操作繁杂 ,患者痛苦大 ,肠道清洁度欠佳。1 991年以来改用口服 2 0 %甘露醇做检查前的肠道准备 ,取得满意效果。报告如下。1　资料与方法病例选择能耐受结肠镜检查 ,无严重心肺功能不全极度衰弱者 ,排除腹腔、盆腔 One of the main means of colonic lesion examination is colonoscopy. In the past, we often used complicated methods, painful patients and poor intestinal cleanliness. Since 1991, oral administration of 20% mannitol has been switched to bowel preparation before the test, with satisfactory results. The report is as follows. 1 Materials and Methods Case selection colonoscopy can be tolerated, no severe cardiopulmonary insufficiency extreme weakness, excluding the abdominal cavity, pelvic