Surgical treatment of retroiliac ectopic ureters with secondary hydronephrosis and hydroureter in a dog
AuthorGriffin, MA; Culp, WTN; Munro, MJL; Palm, CA; Wanamaker, MW
Source TitleJournal of the American Veterinary Medical Association
PublisherAMER VETERINARY MEDICAL ASSOC
University of Melbourne Author/sMunro, Matthew
Document TypeJournal Article
CitationsGriffin, M. A., Culp, W. T. N., Munro, M. J. L., Palm, C. A. & Wanamaker, M. W. (2021). Surgical treatment of retroiliac ectopic ureters with secondary hydronephrosis and hydroureter in a dog. JAVMA-JOURNAL OF THE AMERICAN VETERINARY MEDICAL ASSOCIATION, 258 (7), pp.740-747. https://doi.org/10.2460/javma.258.7.740.
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CASE DESCRIPTION: An 8-month-old 41.2-kg (90.6-lb) sexually intact male Dogue de Bordeaux with urinary incontinence and signs of nausea was referred for further evaluation and treatment of bilateral hydronephrosis, hydroureter, and ectopic ureters. CLINICAL FINDINGS: Clinicopathologic analyses revealed urine specific gravity and serum concentrations of urea nitrogen and creatinine within reference limits. Abdominal ultrasonography and CT revealed unilateral abdominal cryptorchidism, ureters that bilaterally passed dorsal to and appeared compressed by the external iliac arteries (retroiliac ureters), and bilateral hydronephrosis, hydroureter, and ectopic ureters. On CT, minimal uptake of contrast medium by the right kidney indicated either a lack of renal function or ureteral obstruction. TREATMENT AND OUTCOME: The dog underwent exploratory laparotomy, right ureteronephrectomy, left neoureterocystostomy, bilateral castration, and incisional gastropexy without complication and was discharged 2 days postoperatively. Eleven days after surgery, the dog had improved but continued urinary incontinence, improved left hydronephrosis and hydroureter, and serum concentrations of urea nitrogen and creatinine within reference limits. At 24 months after surgery, the dog was reportedly clinically normal, other than having persistent urinary incontinence. CLINICAL RELEVANCE: To our knowledge, this was the first report of a dog with retroiliac ureters and compression-induced ureteral obstruction with secondary hydroureter and hydronephrosis. Retroiliac ureters should be considered as a differential diagnosis in young dogs with ureteral obstruction. Our findings indicated that a good outcome was possible for a dog with retroiliac ureters treated surgically; however, the presence of additional congenital anomalies should be considered and may alter the prognosis in dogs with retroiliac ureters.
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