With higher diagnostic accuracy, CT was crucial in the staging of tumors and determination of operation.The excretory phase on CT scan was primary procedure.

• 肾癌的螺旋CT常规扫描必须包括平扫、增强后的皮髓质期、肾实质期或／和肾盂排泄期扫描，才有利于发现病灶及综合反映肿瘤特征。