肾脏集合系统和/或肾盂输尿管接合处破裂延误诊断,尿液由破裂处流入肾周间隙,可导致肾周积液,甚至出现尿囊肿。尽管引起尿外渗的原因较多,但输尿管肿瘤所致的尿外渗国内鲜见报道,为此本文报告2例输尿管肿瘤所致尿外渗囊肿。1临床与影像诊断例1患者,女,71岁。排气、排便停止伴下 Renal collection system and / or pelvic ureter junction rupture diagnosis, urine flow from the rupture into the perirenal space, can lead to perirenal fluid, and even urinary cysts. Although the causes of extravasation of urine more, but ureteral tumors caused by urinary extravasation rarely reported in China, this paper reports 2 cases of ureteral tumors caused by urinary extravasation cysts. 1 Clinical and imaging diagnosis 1 patients, female, 71 years old. Exhaust, defecation stop with