Double ureter in children: surgical management.

Among 25 cases of double ureter which required surgical treatment, six were accompanied by ureterocele. Interpelvic anastomosis was performed in two cases with uretero-ureteral reflux. En bloc reimplantation was performed for ten double ureters, three of which had common ureteral orifice with reflux in both ureters. In three other cases there was a common segment with low bifurcation and ureteroureteral reflux which had to be excised in order to create two ureteral orifices in the bladder. Heminephrectomy with excision of the ureterocele combined with a simultaneous reimplantation of the ipsilateral ureter was performed in three cases. These cases were accompanied by a large ureterocele and reflux in the ipsilateral ureter. Upper-pole nephrectomy and partial ureterectomy without excision of the stump and ureterocele was performed in one case of small ureterocele without reflux. Excision of the ureterocele combined with en block reimplantation was performed in one case with relatively well preserved renal tissues. Follow-up results were satisfactory in the majority of the cases.