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Acoustic Neuroma

Medically reviewed by Last updated on Jun 5, 2024.

What is an acoustic neuroma (AN)?

AN is a slow growing, benign (not cancer) tumor. The tumor grows on the nerves that control balance, hearing, and feeling in your face. AN also grows on the nerve that moves muscles used for chewing. Rarely, it grows large enough to block fluid from going to your brain. Normally, it only affects one ear.

Ear Anatomy

What causes an acoustic neuroma?

The exact cause is not known. It occurs when your nerve cells grow out of control. This forms the tumor. You may be at higher risk for AN if you have neurofibromatosis 2.

What are the signs and symptoms of an acoustic neuroma?

How is AN diagnosed?

How is AN treated?

Treatment depends on how severe your symptoms are and the size of the tumor. Treatment may also depend on your age. You may not need treatment if the tumor is small. Your healthcare provider may want to monitor your AN with regular MRI scans. You may need surgery to remove all or part of your AN. You may, instead, need radiation treatment to shrink your AN.

Treatment options

The following list of medications are related to or used in the treatment of this condition.

View more treatment options

When should I contact my healthcare provider?

Care Agreement

You have the right to help plan your care. Learn about your health condition and how it may be treated. Discuss treatment options with your healthcare providers to decide what care you want to receive. You always have the right to refuse treatment. The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

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Learn more about Acoustic Neuroma

Treatment options

Symptoms and treatments

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.