(3)Except typical X-ray signs of chronic ulcerative colitis, muhiple polypi were shown characterastic signs of just like "toadskin" on double contrast examination.

(3)X线双重造影检查显示除典炎症征象外，多发息肉形似“蟾蜍皮”“蜂窝状”结肠双比征象是其特征。

Cases from 1991 to 2000 were examined with colonoscope in this paper,196 cases in juvernile below 35 years old had the polypi of large intestine.

196例35岁以下大肠息肉患者临床特点进行总结分析。