title: [Spontaneous urinary extravasation from the renal pelvis associated with ureteral fibroepithelial polyp: report of a case].
abstract: A 26-year-old woman presented with a colicky right flank pain. Retrograde pyelogram showed extravasation of the contrast medium from the right renal pelvis and a filling defect in the right ureter 4.5 cm proximal to the ureteral orifice. Urinary cytology was negative for malignancy. A partial ureterectomy with a vesicoureteroneostomy was performed. Gross inspection of the resected distal ureter revealed a 3-mm polyp with a grayish-white smooth surface as well as a ureteral stenosis of 2 cm in length just distal to the polyp. Pathological diagnosis was a fibroepithelial polyp. In our case, urinary extravasation probably resulted from an impacted polyp in the stenotic ureter.
authors.affiliation: Department of Urology, Kouga Public Hospital.
authors.forename: S
authors.initials: S
authors.lastname: Kageyama
authors.forename: T
authors.initials: T
authors.lastname: Ueda
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007682:Kidney Pelvis; D011127:Polyps / Q000150:complications*; D014516:Ureteral Neoplasms / Q000150:complications*; D014556:Urine