Idiosyncratic reaction after injection of polyacrylate - polyalcohol copolymer

Polyacrylate-polyalcohol copolymer is a synthetic product, non-biodegradable, with low rate of therapeutic failure and lower incidence of reactions at the site of injection, when compared to biodegradable agents. We report an unprecedent, exuberant and persistent inflammatory reaction following injection of that substance.A 17 years-old patient with vesico-ureteral reflux and complete pyelocaliceal right duplication was submitted to treatment...