先天性输尿管闭锁临床少见。我院自 1 998年以来收治 2例 ,现报告如下。1　病例报告例 1　男 ,2岁。腹部逐渐膨隆 1 7个月。体检 :被动体位 ,腹部高度膨隆并向两侧突出 ,扪及有囊性感 ,叩诊呈浊音 ,透光试验阳性。B超可见一巨大无回声区 ,深入盆腔 ,前后径 2 0 cm,左上腹可探及 Congenital ureter atresia rare. Our hospital since 1998, admitted to 2 cases, are as follows. 1 case report 1 male, 2 years old. The abdomen gradually bulging 1 7 months. Physical examination: passive position, bulging abdomen and prominent on both sides, palpable cystic sexy, percussion was dull, transparent test was positive. B ultrasound can see a huge anechoic area, deep pelvic cavity, diameter of 20 cm, the left upper abdomen can be explored and