[Fibroepithelial polyp causing ureteropelvic obstruction in childhood].

The fibroepithelial polyp is a benign tumour that occurs as a rare intraluminal mass within the urinary tract. Most commonly it is located within the ureter or ureteropelvic junction. The authors present 3 cases of fibroepithelial polyp causing obstruction of the ureteropelvic junction. Dismembering pyelonplasty resulted in disappearance of the hydronephrosis, and the postoperative course was uneventful.