Ureteropelvic junction obstruction occurred in 2 patients after successful correction of vesicoureteral reflux. The correction of vesicoureteral reflux does not always allow complete resolution of pelvioureteral tortuosity, kinking and periureteritis. In cases with a severe degree of these changes the possibility of ureteropelvic junction obstruction occurring either early or late after ureteroneocystostomy should be considered when unsatisfactory renal function is noted during followup.
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