结肠是消化系疾病好发部位之一 ,如炎症、息肉、肿瘤等 ,检查手段只有钡灌肠和结肠镜。钡灌肠多因病灶小不能确诊或漏诊 ,结肠镜检查直观 ,且同时可获得组织学检查结果 ,准确率高。但因为结肠的生理解剖特点 ,在肝曲、脾曲处形成锐角 ,且结肠镜通过要使用注气、勾拉等方法 ,由 Colon is one of the predilection sites for digestive diseases, such as inflammation, polyps, tumors, etc., means of examination only barium enema and colonoscopy. Barium enema due to small lesions can not be diagnosed or missed diagnosis, colonoscopy intuitive, and at the same time can obtain histological findings, high accuracy. However, because of physiological anatomical features of the colon, the acute curvature of the liver song, spleen, and colonoscopy through the use of gas injection, hook pull and other methods, from