Purpose Report the method of CT scan in colorectum and to determine the value and limits of water ene ma spiral CT (WESCT) in diagnosing of colorectal tumors.

• 目的报告结肠的螺旋CT扫描方法，评估低张水灌肠螺旋CT扫描(WESCT)对大肠肿瘤性病变的诊断价值和限度。方法对65例已知或高度怀疑结肠病变的病人，行螺旋CT扫描。