1. (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。

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