An unusual pitfall in the conservative management of reflux.
D002675:Child, Preschool; D003558:Cystoscopy; D006801:Humans; D006869:Hydronephrosis / Q000209:etiology*; D008297:Male; D014517:Ureteral Obstruction / Q000209:etiology*; D014567:Urography; D014718:Vesico-Ureteral Reflux / Q000150:complications / Q000000981:diagnostic imaging / Q000628:therapy*