ANTEGRADE BALLOON DILATION OF POSTOPERATIVE URETEROVESICAL JUNCTION OBSTRUCTION IN CHILDREN

Obstruction of the ureterovesical junction is an uncommon but well-rec ognized complication of ureteral reimplantation that traditionally has been treated by surgical correction [1, 5-9]. We report our experienc e with antegrade balloon dilation (ABD) of these strictures in two chi ldren, Obstruction was confirmed by diuretic renogram and pressure per fusion studies prior to ABD. Clinical follow-up was done at 3 months a nd 14 months, and ultrasonographic studies revealed resolution of the hydronephrosis, In addition, diuretic renograms showed complete washou t of radiotracer, Morbidity was limited to episodes of pyelonephritis that readily responded to medical management. ABD of ureteral strictur es is a relatively simple procedure with a potential for a high succes s rate and low morbidity. This modality should be considered as the fi rst line of treatment in patients with distal ureteral obstruction aft er reimplantation.