(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型慢性炎症征象外，多发息肉形似“蟾蜍皮”或“蜂窝状”结肠双对比征象是其特征。