Materials and Methods DCBE was performed in 84 ca ses with hematochezia and suspicious of colonic polyp, of which 46 cases underwe nt colonoscopy for further confirmation or therapy.

• 材料与方法对84例疑诊大肠息肉便血患儿行结肠气钡双重造影且对其中46例作纤维肠镜诊治对照。