下腔静脉后输尿管是一种少见的先天血管发育异常,本文报告近五年3例手术的经验。临床表现较隐蔽,B超可提示右肾积水,尿路造影是诊断的关键。常用Harill手术,我们采用自扩张段输尿管下部离断的改进方法,取得良好效果。对较长段输尿管狭窄需切除者,利用上段扩张之输尿管,达到原位保留肾脏的目的。 Inferior vena cava ureter is a rare congenital vascular dysplasia, the report of the past five years, 3 cases of surgical experience. More subtle clinical manifestations, B-ultrasound can prompt the right hydronephrosis, urography is the key to diagnosis. Commonly used Harill surgery, we use self-expanding segment lower ureteral discontinuation improved method, and achieved good results. For longer ureteral stricture resection, the use of upper ureteral expansion to achieve the purpose of retaining the kidney in situ.