Abnormal Growths in the Lower Intestines of Cats

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Rectoanal Polyps in Cats

The growth of flap-like protrusions in the cat's anal and rectal walls is a condition referred to as rectoanal polyps. These polyps may be directly attached to the intestinal walls (sessile), or attached through a stalk-like cylindrical connection.

Most rectoanal polyps are non-cancerous, and are merely extensions of the innermost tissue lining of the intestinal walls. And while most cases of polyps are usually isolated, there are occasions cats suffer from multiple polyps.

The condition described in this medical article can affect both dogs and cats. If you would like to learn how rectoanal polyps affects dogs, please visit this page in the PetMD health library.

Symptoms and Types

Cats suffering from rectoanal polyps will demonstrate straining or pain while passing stool. The stool may be stained with blood and/or covered with mucus.


The exact cause of rectoanal polyps is not clearly known. However, rectoanal polyps are rare in cats, and neither breed nor gender increases the likelihood for contracting this disorder.


Your veterinarian will perform a thorough physical exam on your cat, taking into account the history of symptoms and possible incidents that might have precipitated this condition. Some of the common tests include a complete blood count and a urinalysis, which will usually return as normal. Imaging tools, such as X-rays and ultrasounds, are not applicable to this particular diagnosis.

Some conditions that may produce symptoms similar to those caused by polyps include abscesses, tumors, inflammation, infection of the intestine, and rectal prolapse. Diagnosis, therefore, is usually made on the basis of a manual rectal examination of the cat by a veterinarian, or by direct visualization of the polyp through the external anal opening.

After a polyp is identified, a colonoscopy, using a tubular, flexible camera inserted through the anal opening, may be performed to check for the presence of other polyps. A detailed pathological study of the tissue, as well as the fluid from the polyp, may also be completed.

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An in-depth examination of the properties of urine; used to determine the presence or absence of illness


The falling forward of something, usually visceral


A growth in the surface of the body


A type of slime that is made up of certain salts, cells, or leukocytes

Courtesy of petmd.com Original Article