Peer-reviewed veterinary case report
Dog with blocked urethra after neuter treated with metal stent
By Della Maggiore, Ann-Marie et al.·Published in Journal of the American Veterinary Medical Association·2013·Veterinary Medical Teaching Hospital, United States·View original on PubMed →
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Original publication title: Treatment of traumatic penile urethral stricture in a dog with a self-expanding, covered nitinol stent.
- Species:
- dog
Plain-English summary
An 8-month-old male mixed-breed dog was brought in with blood in his urine, difficulty urinating, and straining to urinate, which started about two weeks after he was neutered. Tests showed he had a blockage in his urethra due to a stricture (narrowing) caused by trauma. After trying balloon dilation and other procedures without success, the owners opted for a self-expanding stent to keep the urethra open. This treatment worked well, and a year later, follow-up tests showed the stent was still in place and functioning, although some minor tissue changes were noted.
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Abstract
CASE DESCRIPTION: An 8-month-old castrated male mixed-breed dog was evaluated because of hematuria, stranguria, and dysuria of approximately 2 weeks' duration that developed immediately following elective castration. CLINICAL FINDINGS: Results of physical examination, ultrasonography, retrograde double-contrast cystourethrography, and urethroscopy were consistent with a traumatic urethral stricture immediately proximal to the os penis resulting in a partial obstruction of urine outflow. Results of ultrasonographic examination of abdominal organs were considered normal. Digital radiography revealed no evidence of calculi. TREATMENT AND OUTCOME: Balloon dilation of the urethral stricture was performed and was followed by 2 bougienage procedures during the subsequent 2 weeks when clinical signs returned. The owners declined scrotal urethrostomy, and a self-expanding, covered nitinol stent was placed approximately 3 weeks after the initial evaluation, resulting in amelioration of clinical signs. Results of follow-up urethroscopy and contrast cystourethrography 1 year after stent placement revealed a statically positioned, patent urethral stent, although a small number of polypoid mucosal structures were identified distal to the stent and 1 small structure consistent with tissue ingrowth into the stent was identified. CLINICAL RELEVANCE: Placement of a covered nitinol stent resulted in long-term resolution of clinical signs associated with traumatic stricture of the penile urethra in this young dog. Because the os penis in dogs limits radial expansion of the urethra, its presence may limit the use of stents in this location.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/23547676/