Asymptomatic chronic partial obstruction of a normal ureter following dextranomer/hyaluronic acid copolymer (Deflux®) injection for grade I vesicoureteral reflux

Endoscopic management of vesicoureteral reflux with dextranomer/hyaluronic copolymer (Deflux®, Oceana Therapeutics, Inc., Edison, NJ, USA) has gained widespread acceptance with increasing success rates and minimal morbidity. Formation of a pseudocapsule and calcification are known histologic changes at the injection site. Postoperative ureteral obstruction has been reported in cases of severe voiding dysfunction, neurogenic bladder and abnormal ureteral anatomy. We present a case of chronic asymptomatic obstruction in a normal ureter following injection of 0.7 ml Deflux.