我院1995年以来,共收治小儿少见泌尿道畸形与结石4例,均经腹部Ｂ超与手术证实,现报导如下。1　病例介绍例1女,13个月。因不规则低热伴血尿月余入院。入院诊断为急性肾炎。按急性肾炎治疗后,血尿依然存在,后经腹部Ｂ超探查显示左侧输尿管下端见一环状结构阴影。最后诊断为输尿管 Our hospital since 1995, admitted to treatment of infantile urinary tract abnormalities and stones in 4 cases, both confirmed by abdominal B-surgery and surgery, are reported as follows. 1 case introduction example 1 female, 13 months. Irregular low fever with hematuria due to irregular admission. Admission diagnosis of acute nephritis. According to the treatment of acute nephritis, hematuria still exists, after transabdominal B- ultrasound showed a ring-shaped structure at the bottom of the ureter shadow. The final diagnosis of ureter