患者男 ,30岁。右肾积水 10年 ,间歇性终末血尿 2d ,体检未见异常。影像学检查 :B超示右肾重度积水 ,膀胱后方囊性占位 ,膀胱憩室可能性大。CT平扫示 :左肾增大 ,轮廓规整 ,密度正常 ;右肾位于L4～ 5水平 ,向内前移位 ,肾门朝向前外侧 ,肾盏扩大积水 ,皮质菲薄 ;右侧输尿管扩张 Male patient, 30 years old. Right hydronephrosis 10 years, intermittent hematuria 2d, no abnormal physical examination. Imaging examination: B ultrasound showed severe hydronephrosis, bladder posterior cystic spaces, the possibility of bladder diverticulum. CT scan showed: increased left kidney, the outline of the normal, normal density; right kidney at the L4 ~ 5 level, inward shift, the front of the renal door toward the outside, calyx enlargement of water, cortical meager;