Large cysts are occasionally found within or adjacent to (paraprostatic) the prostate gland. Paraprostatic cysts result from embryologic remnants of the female reproductive tract found in males that become fluid-filled. The signs are similar to those seen with other types of prostatic enlargement and usually become apparent only when the cyst reaches a size sufficient to cause pressure on adjacent organs. Large cysts may result in abdominal distention and must be differentiated from the bladder and from prostatic abscesses.
Medical treatment is ineffective. Castration alone is unlikely to be of benefit but may be indicated after the cyst has been removed. Total excision of the prostatic cyst is the treatment of choice. If complete excision of the cyst is not possible, the remaining portion of the cyst may be filled with a leaf of omentum secured with sutures. This “omentalization” of the cyst will provide internal drainage and lead to resolution. Surgical excision is preferable to marsupialization, because chronic management of the marsupialization fistula is often problematic.
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Also see pet health content regarding prostatic diseases in dogs Disorders of the Prostate Several reproductive diseases can affect male dogs. This section discusses the most common of these disorders. Cryptorchidism is a failure of one or both testicles to descend into the scrotum... read more and prostatic diseases in cats Disorders of the Prostate Several reproductive diseases can affect male cats. Although most of these disorders (other than cryptorchidism) are rare, the most commonly encountered conditions are discussed below. Cryptorchidism... read more .