title: Spontaneous retrograde movement of ureteroliths in two dogs and five cats.
abstract: METHODS
  2 dogs and 5 cats were evaluated for treatment of ureteroliths.
  
  
  RESULTS
  Spontaneous retrograde movement of 1 or more ureteroliths was detected by radiography, ultrasonography, fluoroscopy, and a combination of fluoroscopy and ultrasonography. The ureteroliths moved retrograde up to 4 centimeters. Retrograde movement of ureteroliths into the renal pelvis resulted in improved renal function in some patients but made complete surgical removal of all uroliths more difficult.
  
  
  RESULTS
  Medical management was not successful, and ureteroliths were surgically removed. Surgical management of ureteroliths was complicated by retrograde movement of ureteroliths in the perioperative period.
  
  
  CONCLUSIONS
  Ureteroliths can move retrograde within the ureter and even back into the renal pelvis. Retrograde movement of ureteroliths may make surgical planning more difficult.
authors.affiliation: Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Purdue University, West Lafayette, IN 47907-2026, USA.
authors.forename: Anne M
authors.initials: AM
authors.lastname: Dalby
authors.forename: Larry G
authors.initials: LG
authors.lastname: Adams
authors.forename: S Kathleen
authors.initials: SK
authors.lastname: Salisbury
authors.forename: William E
authors.initials: WE
authors.lastname: Blevins
mesh_terms: D000818:Animals; D002371:Cat Diseases / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D002415:Cats; D004283:Dog Diseases / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D004285:Dogs; D008297:Male; D009392:Nephrectomy / Q000379:methods / Q000662:veterinary; D016896:Treatment Outcome; D014514:Ureteral Calculi / Q000175:diagnosis / Q000473:pathology / Q000601:surgery / Q000662:veterinary*; D013520:Urologic Surgical Procedures / Q000662:veterinary