大肠癌50%以上来自息肉癌变,其中75%由绒毛状腺瘤,15%由管状绒毛状腺瘤,10%由腺瘤样息肉而来。大肠息肉的早期诊断和治疗,为防治大肠癌变的重要措施。我院自1978年开始在无透视下,采用CF—LB_3及CF—1BW纤维结肠镜作结肠镜检查,1979年在肠镜下开展电凝息肉切除手 More than 50% of colorectal cancers are from polyposis, of which 75% are villous adenomas, 15% are tubular villous adenomas, and 10% are from adenomatous polyps. The early diagnosis and treatment of colorectal polyps is an important measure to prevent and treat colorectal cancer. In our hospital since 1978, CF-LB_3 and CF-1BW colonoscopy were used for colonoscopy under no perspective. In 1979, electrocoagulation polypectomy was performed under colonoscopy.