title: Benign fibroepithelial polyps causing symptomatic bilateral intermittent hydroureteronephrosis.
authors.affiliation: Department of Pediatric Urology, Children's Hospital of Pittsburgh, Pennsylvania, USA.
authors.forename: J P
authors.initials: JP
authors.lastname: Lavelle
authors.forename: A S
authors.initials: AS
authors.lastname: Knisely
authors.forename: M F
authors.initials: MF
authors.lastname: Bellinger
mesh_terms: D002648:Child; D006801:Humans; D006869:Hydronephrosis / Q000209:etiology*; D008297:Male; D011127:Polyps / Q000150:complications*; D014516:Ureteral Neoplasms / Q000150:complications*