患儿 ,男 ,5岁。肛门排尿 4年余。出生后即不由尿道排尿 ,而脐尿管处有溢尿。出生后 3个月因脐尿管瘘在当地医院行脐尿管瘘切除术 ,术后 2 d家长发现肛门缘呈细线状排尿 ,尔后逐渐形成蹲位肛门排尿习惯。无尿液与粪便混合或从直肠内排出不成线之尿液症状。静脉肾盂造影提示右肾 Children, male, 5 years old. Anal voiding more than 4 years. After birth that is not urination urethra, and urethra Department have overflow urine. 3 months after birth because of the urachus fistula in the local hospital line of urachalcus fistula resection, 2 d after surgery, the parents found that the anal margin showed fine linear urination, and then gradually formed squatting anus urination habits. No urine and feces mixed or discharged from the rectum not line of urine symptoms. Intravenous pyelography prompted the right kidney