How to Treat Benign Ear Tumors in Cats

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If young cats can avoid injury or infectious disease (the chances of which are much greater if they are indoor-only), they usually only see the veterinarian for preventive care. One condition that bucks this trend is called the nasopharyngeal polyp.

Polyps are benign masses of tissue that can form in many places throughout the body. In this case, the descriptor “nasopharyngeal” is a bit confusing because these masses generally do not originate in the nasopharynx (the area within the throat that lies behind the nasal cavities and above the soft palate*) but from the tubes connecting the middle ear to the nasopharynx (Eustachian or auditory tubes) or from within the tympanic bulla, a part of the middle ear. That said, when they grow large enough, nasopharyngeal polyps can extend into the nasopharynx or even into the external ear canal.

Though technically benign (not having the tendency to spread or worsen appreciably*), nasopharyngeal polyps can cause big problems for cats. They are usually diagnosed in animals under the age of two and cause symptoms that include some combination of the following:

sneezing

nasal discharge

gagging

a change in voice

difficulty breathing or eating

head shaking

ear scratching

discharge from the ear

head tilt

circling

unsteadiness when walking

changes in the shape of the pupils or movement of the eyes

Of course, these clinical signs are seen with other conditions that affect young cats (e.g., upper respiratory infections and ear infections/mites), but when these more common problems have been ruled-out, the presence of a nasopharyngeal polyp must be considered.

Many nasopharyngeal polyps can be diagnosed by sedating the cat and pulling the soft palate forward within the mouth using an instrument called a spay hook. There really shouldn’t be anything in the space above the soft palate, so when a lump of tissue appears, you have your diagnosis. If the polyp has invaded the middle ear, it may be visible through the tympanic membrane (ear drum) when examining the ears with an otoscope. X-rays or a CT-scan are sometimes necessary to reach a definitive diagnosis.

In the best case scenario, a nasopharyngeal polyp can essentially just be pulled off the tissue from which it is growing, either via the mouth or through the ear if the tympanic membrane is ruptured. The veterinarian applies steady traction on the polyp until it releases, hopefully at its base. Post-op treatment with pain relievers, antibiotics, and corticosteroids is necessary.

Polyps can recur after traction removal and medical treatment. This is more likely if the mass had to be removed via the ear rather than through the mouth. If the polyp does come back, a more invasive surgery called a ventral bulla osteotomy is usually necessary. I’ve never done one of these procedures myself because there are a lot of important veins and nerves that run through the surgical site, and I’m a pretty wimpy surgeon. I’ve referred these patients out to board-certified veterinary surgeons and they’ve all done really well after the procedure.

So, if your cat is ever diagnosed with a nasopharyngeal polyp, take heart in knowing that with appropriate treatment, he or she should go on to live a long and hopefully uneventful (medically-speaking, at least) life.

Dr. Jennifer Coates writing for PetMD

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 How to Treat Benign Ear Tumors in Cats
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Posted by on December 12, 2012. Filed under CRITTER TALK. You can follow any responses to this entry through the RSS 2.0. You can leave a response or trackback to this entry
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2 Responses to How to Treat Benign Ear Tumors in Cats

  1. Carrie brooks Reply

    December 12, 2012 at 9:13 am

    It was extremely informative for myself. I currently do not have a cat but i own 4 dogs. Thank for sharing your information with others so that the owners can look for the sighs and be able to get his/her pet help expediently.

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