title: A spontaneous giant urinoma: a cause of abdominal mass.
abstract: OBJECTIVE
  To report a case of unilateral ureteral obstruction associated with giant retroperitoneal urinoma which was treated successfully by percutaneous drainage.
  
  
  METHODS
  A 19G ultrasound guided needle was introduced into the mass and after dilatation procedure, a 14 Fr nephrostomy catheter was placed and 5.5 of liquid were drained.
  
  
  RESULTS
  Drainage from the nephrostomy catheter stopped 24 hours later. Patient was discharged with the nephrostomy tube. One week later, on control tomography, absence of left renal suprahilar posteromedial focal cortical contour was seen.
  
  
  CONCLUSIONS
  A minor cortical or forniceal rupture with no urinary extravasation on radiographic examination is thought to be the cause of this urinoma. Percutaneous drainage may be considered as an alternative treatment option to surgical intervention in the treatment of urinomas, especially when there is no persistent ureteral obstruction or communication between the collecting system and the urinoma.
authors.affiliation: Department of Urology, Cerrahpasa School of Medicine, University of Istanbul, Istanbul, Turkey. cabir1@yahoo.com
authors.forename: Cabir
authors.initials: C
authors.lastname: Alan
authors.forename: Mehmet
authors.initials: M
authors.lastname: Kalkan
authors.forename: Hakki
authors.initials: H
authors.lastname: Uzun
authors.forename: Bülent
authors.initials: B
authors.lastname: Alici
authors.forename: Zübeyr
authors.initials: Z
authors.lastname: Talat
mesh_terms: D006801:Humans; D008297:Male; D008875:Middle Aged; D012187:Retroperitoneal Space; D014517:Ureteral Obstruction / Q000150:complications / Q000209:etiology* / Q000473:pathology; D014556:Urine