title: Incidental renocolic fistula with xanthogranulomatous pyelonephritis.
abstract: BACKGROUND
  We report the case of a 66-year-old female undergoing elective nephrectomy for a non-functioning kidney in whom an incidental renocolic fistula was detected.
  
  
  METHODS
  She presented with recurrent urinary tract infections and left flank pain. Investigations revealed a nonfunctioning left kidney with a large staghorn calculus and features suggestive of xanthogranulomatous pyelonephritis (XPG). At nephrectomy, an incidental renocolic fistula was found and excised.
  
  
  CONCLUSIONS
  XGP is a rare, chronic inflammatory disorder of the kidney characterized by a destructive mass invading the renal parenchyma. Renocolic fistulae complicating XGP are uncommon and not widely reported in the literature.
  
  
  CONCLUSIONS
  Herein, we describe a case of XGP with renocolic fistula formation, its management and a review of the literature.
authors.affiliation: Tallaght Hospital, Tallaght Dublin 24, Ireland.
authors.forename: R L
authors.initials: RL
authors.lastname: McDermott
authors.forename: C M
authors.initials: CM
authors.lastname: Dowling
authors.forename: M
authors.initials: M
authors.lastname: Alsinnawi
authors.forename: R
authors.initials: R
authors.lastname: Grainger