ArticleFrontiers in veterinary science2026
Hydrocolpos in a mixed-breed dog: a case report.
Article in Frontiers in veterinary science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
A 3.5-year-old, 5.2-kg mixed-breed dog was presented with persistent stranguria after being neutered due to dystocia 6 months ago. Plain abdominal radiographs revealed an intrapelvic soft-tissue attenuating mass that displaced the urinary bladder cranially and constricted the descending colon. Abdominal ultrasonography yielded inconclusive results. Computed tomography revealed the mass as a tubular, hypodense structure compressing the urethra and the descending colon. This finding was defined as hydrocolpos induced by an imperforate hymen, segmental vaginal aplasia, or a vestibulovaginal disorder. Vaginoscopy revealed vaginal atresia and a stem-shaped mass obscuring the ostium urethrae externum. Retrograde cystography showed a significantly dilated urethra behind the obscured ostium urethrae externum. A pedunculated mass (polyp) was suspected to hinder the urinary outflow. A minimal invasive resection of the polyp and widening of the urethra were performed. Normal micturition was observed for 2 months. In the 9th week, the patient returned with tenesmus. An invasive procedure involving episiotomy, evacuation of the hydrocolpos, and creation of a stoma between the mucous membrane of the hydrocolpos and the vaginal mucosa led to permanent resolution of the clinical signs. Only a few case reports exist regarding congenital hydrocolpos. As the history indicates, a traumatic origin is considered likely; therefore, we assume that this is the first case report of secondary, trauma-induced vaginal atresia, and the resulting hydrocolpos.
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