Policresulen is effective for the topical treatment of vaginal varices in a pregnant mare: Case report.

Vaginal varicosities in mares are rarely reported, although considered relatively common. Clinical recognition can be challenging, especially during early pregnancy, due to the intermittent nature of the bleeding. This report aims to describe the diagnostic approach, clinical evolution, and treatment of a case of vaginal varicosity in a pregnant mare, emphasizing a practical and minimally invasive method. A 9-year-old Brazilian Sport Horse mare with intermittent vaginal hemorrhage underwent clinical evaluation, showing no abnormalities. Vaginoscopy with a rigid endoscope revealed varicose veins in the vestibule-vaginal region. Chemical cauterization was performed using a 36 % Policresulen solution. The treatment was well tolerated, inexpensive, and effective in controlling bleeding. The clinical sign resolved within a few days, with no recurrence observed. Rigid endoscopy proved to be a practical diagnostic tool for field use. Policresulen offered an efficient, low-cost, and minimally invasive therapeutic option for managing vaginal varicosities in mares.