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An acoustic neuroma is a benign growth on the eighth cranial nerve that connects the inner ear to the brain. Also called a vestibular schwannoma, these growths can cause severe problems including hearing loss, due to the pressure of the tumor onto the nerve. Such issues can become permanent if left untreated.

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1. What Causes an Acoustic Neuroma?

The exact cause of acoustic neuromas is still under investigation, but doctors believe defects in a tumor-suppressing gene are partially to blame. Research has also been done to determine whether loud noises might be a contributing factor. Previous exposure to radiation treatments around the head and neck is also a potential cause.

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