title: Ureteral fibroepithelial polyp associated with urolithiasis induced by steroid therapy in a child: a case report.
abstract: A 14-year-old boy complained of left flank pain. He had been given high-dose corticosteroid therapy for chronic inflammatory demyelinating polyneuropathy (CIDP). Retrograde pyelography revealed irregular defects at the left ureteropelvic junction (UPJ), and ureteroscopy demonstrated ureteral polyp. The polyp was removed and histologically diagnosed as fibroepithelial polyp. Hypercalciuria due to the corticosteroids and bedridden was assumed to have been a causative factor in the stone formation. To our knowledge, this is the first report of a ureteral fibroepithelial polyp in children associated with urolithiasis, and associated with CIDP.
authors.affiliation: Department of Urology, Komaki Shimin Hospital.
authors.forename: T
authors.initials: T
authors.lastname: Taki
authors.forename: O
authors.initials: O
authors.lastname: Matuura
authors.forename: Y
authors.initials: Y
authors.lastname: Isobe
authors.forename: O
authors.initials: O
authors.lastname: Kamihira
authors.forename: S
authors.initials: S
authors.lastname: Yamada
authors.forename: A
authors.initials: A
authors.lastname: Kondo
authors.forename: Y
authors.initials: Y
authors.lastname: Yamada
authors.forename: N
authors.initials: N
authors.lastname: Honda
mesh_terms: D000293:Adolescent; D006801:Humans; D008297:Male; D008775:Methylprednisolone / Q000008:administration & dosage / Q000009:adverse effects*; D018225:Neoplasms, Fibroepithelial / Q000209:etiology*; D011127:Polyps / Q000209:etiology*; D020277:Polyradiculoneuropathy, Chronic Inflammatory Demyelinating / Q000150:complications* / Q000188:drug therapy; D011239:Prednisolone / Q000008:administration & dosage / Q000009:adverse effects*; D014516:Ureteral Neoplasms / Q000209:etiology*; D014545:Urinary Calculi / Q000209:etiology*
chemical_list: D011239:Prednisolone; D008775:Methylprednisolone