Acoustic Neuroma

Definition

Definition of Acoustic Neuroma
Acoustic neuroma is a non-cancerous tumor that develops on the nerve that connects the ear to the brain. The tumor usually grows slowly. As it grows, it presses against the hearing and balance nerves.

Symptoms

Symptoms of Acoustic Neuroma
At first, you may have no symptoms or mild symptoms. They can include

1. Loss of hearing on one side
2. Ringing in ears
3. Dizziness and balance problems

Causes

Causes of Acoustic Neuroma
Acoustic neuromas have been linked with the genetic disorder neurofibromatosis type 2 (NF2). Acoustic neuromas are relatively uncommon.

Diagnosis

Diagnosis of Acoustic Neuroma
Acoustic neuroma can be difficult to diagnose, because the symptoms are similar to those of middle ear problems. Ear exams, hearing tests and scans can show if you have it.

Tests

Tests of Acoustic Neuroma
The health care provider may diagnose an acoustic neuroma based on your medical history, an examination of your nervous system, or tests.

Often, the physical exam is normal at the time the tumor is diagnosed. Occasionally, the following signs may be present:

1. Drooling
2. Facial drooping on one side
3. Unsteady walk
4. Dilated pupil on one side only (See: Eyes, pupils different size)

Treatment

Treatment of Acoustic Neuroma
If the tumor stays small, you may only need to have it checked regularly. If you do need treatment, surgery and radiation are options. If the tumors affect both hearing nerves, it is often because of a genetic disorder called neurofibromatosis. The tumor can also eventually cause numbness or paralysis of the face. If it grows large enough, it can press against the brain, becoming life-threatening.

Prognosis

Prognosis of Acoustic Neuroma
An acoustic neuroma tends to grow very slowly, and will not spread from the original site of the tumour. Sometimes, an acoustic neuroma is so small and grows so slowly that it does not cause any symptoms or problems.

An acoustic neuroma is not usually a life-threatening condition, but the symptoms can disrupt day-to-day life. For example, a loss of hearing may affect a person’s ability to communicate with other people.