Lesions were found on retrograde ureterography in 3 cases .

3例逆行 肾盂 造影发现病变。

Excretory urography were performed in all 5 cases retrograde ureterography were performed in 3 cases plain and contrast CT were performed in 2 cases and MRI were performed in 2 cases .

5例患者均行 静脉肾盂造影，3 例行逆行 肾盂 造影，2例行CT平 扫和增强，2例行MR平 扫。