Effective treatment of late-onset urinary incontinence with a slow-release GnRH analogue implant in an entire male dog with bilateral ectopic ureters

A 2-year-old, mixed breed dog of predominantly labrador retriever genotype and phenotype, entire male presented with a 6-month history of urinary incontinence. The dog had a continuous urine dripping without straining. The urine bladder was small. No neurological abnormalities were found. Haematology, biochemistry, urinalysis and plain abdominal radiographs, including the urethra, were without remarkable findings. On abdominal ultrasonography, caudally displaced ureters were detected. Contrast-enhanced computed tomography subsequently confirmed bilateral ectopic ureters entering the prostatic urethra. As the dog had remained urinary continent until the onset of sexual maturity, it was hypothesised that the dog would regain continence if it returned to a sexually inactive state. A slow-release gonadotropin-releasing hormone analogue (deslorelin) implant was administered subcutaneously in the neck. The incontinence started to decrease after 4 weeks, and the dog was completely continent after 6-7 weeks. Continence was maintained with repeat dosing of gonadotropin-releasing hormone implants.