Disorder - Hernia, perineal

Organ Systems Involved
Musculoskeletal

Alternative disorders described within LIDA

Megacolon

Presenting Signs

Perineal hernia is due to weakness and separation of the muscles and their associated fibrous tissue of the pelvic outlet, the opening from the pelvis. The disorder allows displacement of pelvic or abdominal organs, as well as the rectum, into the perineum, the area between the anus and the genitals. Cats with perineal hernia will usually present with constipation and straining to defecate. Some cats may also have a bulging perineal region or prolapse of the rectum associated with their perineal hernia. In most cases the hernia will be on both sides of the perineum.

Cats at Risk

Desexed cats are more frequently affected. Cats that have had a perineal urethrostomy performed due to feline urological syndrome may be at a higher risk for perineal hernia. However, cats with megacolon, perineal masses or colitis may also be at an increased risk. Male cats and older cats appear to be at an increased risk, with research revealing the median age for diagnosis being ten years.

Treatment

Surgical and medical. Medical treatment will only address the clinical signs, such as constipation, and consists of administration of laxatives and enemas. Surgical treatment, to repair the hernia, involves suturing the separated muscles and fascia back together. In some cases, a muscle, such as the internal obturator, can be used to help fill the deficit.

PubMed References
Hernia, perineal

Contributor
Veronica Victoria Gibb-Cumming