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Spontaneous retrograde movement of ureteroliths in two dogs and five cats
Anne M Dalby1, Larry G Adams, S Kathleen Salisbury
1Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Purdue University, West Lafayette, IN 47907-2026, USA.
Case Description:
2 dogs and 5 cats were evaluated for treatment of ureteroliths.
Clinical Findings:
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.
Treatment And Outcome:
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.
Clinical Relevance:
Ureteroliths can move retrograde within the ureter and even back into the renal pelvis. Retrograde movement of ureteroliths may make surgical planning more difficult.
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Ureters

