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Mass Protrusion from the Vaginal Area in Dogs

Vaginal Hyperplasia and Prolapse in Dogs

Vaginal hyperplasia and prolapse entail a protruding mass from the vaginal area, akin to fluid-filled tissue (edema). Severe cases can impede regular urination. While affecting dogs of all ages, it tends to occur more frequently in younger animals. The prognosis is generally favorable, yet recurrence rates are notable.

Symptoms and Types

Type 1 hyperplasia is characterized by a slight protrusion that remains within the vulva without exiting. In contrast, Type 2 hyperplasia involves the actual protrusion of vaginal tissue through the vulvar opening. Type 3 hyperplasia presents as a donut-shaped mass visible externally.

Various signs may indicate this medical condition, such as licking of the vaginal area, reluctance to mate, and painful urination (dysuria).


While this disorder can impact nearly any breed, certain breeds are more prone to experiencing it. These include Labradors, Chesapeake Bay Retrievers, German Shepherds, Springer Spaniels, Walker Hounds, Airedale Terriers, and American Pit Bull Terriers.


During a physical examination, a circular mass may be observed protruding from the animal’s vulvar area. A vaginal examination will be conducted to assess the extent and type of the condition. The tissue may feel dry to the touch.


Typically, treatment is conducted on an outpatient basis. It is crucial to maintain cleanliness around any protruding mass and monitor for potential urination issues, which are frequently encountered. The recurrence rate is notable, with 66-100% of animals experiencing a reappearance of the medical condition after treatment.

Living and Management

In cases where the animal struggles to urinate, it signals a serious medical issue requiring immediate attention. Although the prognosis for the animal is generally favorable, complications may arise, especially when the urethra is implicated.


At present, there are no established methods for preventing this medical condition.

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