More precisely, a polyp is an inflammatory tissue growth rather than a true cancerous tumour. However, appearance alone cannot distinguish every mass in the nasopharynx or ear. Removed tissue is therefore examined: another type of change that looks similar may need different treatment.
When to see a vet urgently
Seek emergency care if your cat has any of these signs:
- open-mouth breathing or clearly laboured breathing;
- stretching the neck, marked restlessness and difficulty getting air;
- difficulty swallowing that prevents eating or drinking;
- falling over or another sudden, severe balance problem.
Keep a cat with breathing difficulties calm and do not try to examine its throat at home. You can find a vet near you.
Overview
A polyp is a soft tissue growth attached by a narrow or broad stalk. It develops from the lining of the middle ear or nasopharynx and grows gradually. Cats usually have a single polyp, although multiple polyps occasionally occur.
Nasopharyngeal polyps are most often diagnosed in young animals: kittens and cats under 3–4 years old. A polyp is not cancer, but it significantly reduces a cat's quality of life. It obstructs normal breathing and causes chronic ear infections, noisy breathing and swallowing difficulties.
A particular feature of this condition is that symptoms can vary greatly. Some cats only snore mildly; in others, a polyp causes serious complications, ranging from persistent ear infections with pus to neurological problems.
The nasopharynx lies behind the nasal cavity, above the soft palate. The auditory tube connecting the middle ear and throat provides a route for the growth, so the same condition can cause both breathing and ear symptoms. Both sides may also be affected. Finding one visible polyp therefore does not always reveal the full extent of the problem.
Causes
The exact way nasopharyngeal polyps develop in cats is not fully understood. Chronic inflammation of the middle ear or nasopharyngeal lining is thought to trigger excessive tissue growth.
Possible causes include:
- Chronic middle ear infections: one of the main theories.
- Viral respiratory diseases, including herpesvirus and calicivirus.
- Secondary bacterial infections after cat flu or other viral infections.
- Congenital abnormalities of the auditory tube or ear that encourage fluid to accumulate.
- Autoimmune reactions that cause excessive renewal of the lining.
Some of these are theories about how polyps develop. A direct causative role for particular respiratory viruses or bacteria has not been consistently demonstrated, and evidence for the autoimmune theory is limited. A previous episode of cat flu alone therefore does not establish the cause of a polyp. A concurrent bacterial infection can be treated, but antibiotics alone do not remove the tissue growth.
Risk factors
- Young age, particularly kittens and cats under 3 years old.
- Previous or chronic respiratory infections.
- A tendency to develop ear infections and inflammation.
- Reduced immunity and prolonged recovery from illness.
- Crowded conditions, such as breeding establishments and animal shelters, where viral infections spread easily.
Young age is a recognised association, but less is known about the importance of the other risk factors listed. Older cats can also develop polyps. Reduced immunity or living in a group cannot explain every polyp, and no general breed or sex predisposition has been established.
Typical symptoms
Symptoms depend on exactly where the polyp is and how large it has grown.
Nasopharyngeal polyps:
- noisy breathing and snoring;
- sneezing and occasional bouts of coughing;
- reduced airflow through the nose;
- reduced appetite because of difficulty swallowing;
- sometimes gagging while eating.
Middle ear polyps:
- recurrent or chronic ear infections;
- ear discharge, either clear or containing pus;
- head shaking or tilting the head to one side;
- reduced hearing;
- pain when the ear is touched.
Large polyps:
- swallowing difficulties;
- weight loss;
- lethargy and listlessness;
- neurological signs, such as dizziness and poor coordination.
The type of symptoms depends on the direction of growth as well as its size, and on whether nerves around the ear or the balance system are involved. Noisy breathing and throat obstruction may look different from a balance disorder originating in the ear. Symptoms alone cannot distinguish a polyp from other ear or respiratory diseases.
Complications and consequences
Left untreated, the condition can have serious consequences:
- chronic ear infections requiring prolonged treatment;
- destruction of the eardrum and spread of infection to the inner ear;
- permanent hearing loss;
- meningitis, which is rare but possible when infection spreads upwards;
- neurological problems associated with damage to the balance organs.
Remember that although polyps are benign, their growth does not stop by itself. Without surgery, the condition progresses.
The rate of progression varies, and not every cat develops all the complications listed. Even so, you should not wait for a polyp that is causing symptoms to disappear by itself. Treatment decisions depend on its effects on breathing, swallowing and ear function, together with examination findings.
Diagnosis at the vet
A thorough assessment includes:
- Examining the ear with an otoscope to identify changes in the ear canal.
- Examining the nose or throat with a scope to see a polyp in the nasopharynx.
- Skull X-rays to assess the middle ear.
- CT scanning in difficult cases to establish the size and location of the growth.
- Histological examination of removed tissue to confirm a benign polyp and rule out malignant tumours.
A complete throat examination usually requires sedation or general anaesthesia because a polyp may be hidden behind the soft palate. Otoscopy does not provide a direct view of the entire middle ear. CT or MRI can also help plan the procedure, rather than being useful only in the most difficult cases. Imaging assesses where the growth originates and how far it extends.
Histological examination confirms the nature of the growth. Do not try to pull or detach a visible mass at home: the procedure requires control of the airway, pain and possible bleeding.
Treatment
The only effective treatment is surgical removal of the polyp. There are two main methods:
- Traction-avulsion: the polyp is pulled out through the mouth or ear canal. This is the simpler method, but the polyp may recur.
- Bulla osteotomy: a more extensive operation that opens the bony middle ear chamber and removes damaged lining as well as the polyp. This reduces the risk of recurrence.
After surgery, the cat receives antibiotics, anti-inflammatory medication and supportive care. The prognosis is usually good.
The need for antibiotics is assessed individually, for example according to whether there is a concurrent infection. Anti-inflammatory medication may form part of treatment, but it does not usually replace removal of a mass that interferes with breathing or swallowing. The treating vet chooses the procedure according to the polyp's origin, middle ear findings and any previous recurrence.
Home care after the procedure
Follow the discharge instructions for pain relief, feeding and protecting the wound. Soft food may be recommended during recovery. If your cat does not start eating or its breathing becomes more difficult, contact the treating practice immediately. Do not put ear cleaner or leftover drops into the ear yourself. If your cat wears a protective collar, make sure it can eat and drink while wearing it. Prevent scratching of the wound as instructed at discharge.
Horner's syndrome can develop after bulla osteotomy: the pupil on the affected side becomes smaller, the upper eyelid droops and the third eyelid may become visible. A head tilt or balance difficulties are also possible. These changes are often temporary, but report new symptoms so their significance can be assessed. If the eye does not close normally, its surface may need protective treatment.
Monitoring for recurrence
The base of a polyp may remain after traction-avulsion, allowing it to grow back. More extensive treatment of its origin reduces this risk but cannot eliminate it completely. Watch particularly for returning noisy breathing, difficulty swallowing, ear discharge and head shaking. New symptoms need examination, as they may be caused by a recurrent polyp, persistent inflammation or another condition.
Prevention
There is no specific way to prevent nasopharyngeal polyps. However, you can reduce the risk by:
- treating respiratory infections promptly;
- preventing ear infections and treating them early;
- arranging regular veterinary checks, particularly for a young cat;
- supporting immunity with a varied diet and good living conditions.
The effect of these measures specifically on polyp prevention has not been established with certainty, because the cause remains unclear. Good nutrition and treatment of illness support general health. They do not guarantee that a polyp will not develop on the lining, and no specific preventive supplement is known.
Important for cat owners
Nasopharyngeal polyps are among the most common benign upper respiratory conditions in young cats. Despite being benign, they can cause serious complications and significantly reduce a cat's quality of life.
Remember:
- noisy breathing, breathing difficulties and recurrent ear infections in a young cat are warning signs that require veterinary attention;
- early diagnosis allows a polyp to be removed at an early stage and prevents complications;
- timely surgery most often leads to complete recovery without recurrence.
Early treatment improves the chance of relieving symptoms, but complete recovery without recurrence cannot be promised. The prognosis is often good when the obstructive growth can be removed and concurrent ear disease controlled. Monitoring recovery remains part of care even after a successful procedure.
This article provides general information and does not replace veterinary care. If you notice signs of illness in your cat, contact a vet.
Frequently asked questions
Is a nasopharyngeal polyp in a cat cancer?
An inflammatory polyp is not a cancerous tumour. However, another mass can look similar, so histological examination confirms the diagnosis and whether further treatment is needed.
Can antibiotics cure a polyp?
Antibiotics can treat a concurrent bacterial infection but do not remove the tissue growth itself. A polyp that affects breathing or swallowing usually needs to be removed.
Why can a polyp come back?
Part of the polyp's base may remain at its origin, allowing it to regrow. The choice of procedure and treatment of the middle ear affect the risk. Returning symptoms need further investigation.
This article is for general information only and is not a guide to treatment. If you notice the first signs of illness, contact your vet.
Paw4care editorial team
Sources
- Nasopharyngeal Polyps, American College of Veterinary Surgeons, accessed 2026-11-03.
- Inflammatory Polyps in Cats, Merck Veterinary Manual, accessed 2026-11-03.
- Nasopharyngeal Polyps in Cats, VCA Animal Hospitals, accessed 2026-11-03.
- Nasopharyngeal Polyps, Cornell University College of Veterinary Medicine, accessed 2026-11-03.
- Inner Ear Infection (Otitis Interna) in Cats, VCA Animal Hospitals, accessed 2026-11-03.
- Peripheral vestibular syndrome in cats: Clinical presentation, diagnostic findings and outcome in 196 cases, Veterinary Record, accessed 2026-11-03.