Acoustic Neuroma Removal

(Neurilemmoma; Vestibular Schwannoma)


An acoustic neuroma is a noncancerous tumor. It grows on the acoustic nerve, which runs from the brain to the ear. This type of tumor typically grows slowly. It may cause hearing loss, balance problems, facial numbness, and headaches.
The Acoustic Nerve
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There are 3 main treatment options for an acoustic neuroma:This fact sheet focuses on microsurgical removal.

Reasons for Procedure

Microsurgical removal is done when:
  • The tumor is growing
  • There is concern that the tumor size may become life-threatening
  • The tumor is causing hearing problems or neurologic symptoms
A successful procedure results in complete removal of the tumor with minimal additional hearing loss.

Possible Complications

Problems from the procedure are rare, but all procedures have some risk. Potential problems include:
  • Hearing loss
  • Excessive eye dryness
  • Difficulty with balance
  • Ringing in the ears—tinnitus
  • Facial weakness and numbness on the side of the tumor
  • Headaches
  • Bleeding
Some factors that may increase the risk of complications include:
  • Smoking
  • Increased age
  • Size of the tumor

What to Expect

Prior to Procedure

Talk to your doctor about your medications. You may be asked to stop taking some medications up to one week before the procedure.


General anesthesia will be used. You will be asleep.

Description of the Procedure

The type of surgical procedure will depend on your condition. Factors such as hearing status and the size and location of the tumor will be considered. One of the following surgical methods will be selected:TranslabyrinthineThis approach is often used when you already have significant hearing loss. The mastoid bone in the skull and bone in the inner ear will be removed. This allows access to the ear canal and the tumor.Retrosigmoid/SuboccipitalAn opening will be made in the skull behind the ear. It makes it easier to see and protect the nerves during surgery.Middle FossaThe tumor will be removed from the upper surface of the ear canal. This approach is used when there is a good chance that hearing may be maintained.

Immediately After Procedure

You will spend at least one night in the intensive care unit for care and observation.

How Long Will It Take?

The surgery takes about 6-12 hours. The exact length will depend on the size and location of the tumor.

How Much Will It Hurt?

Anesthesia will prevent pain during surgery. Pain and discomfort after the procedure can be managed with medications.

Average Hospital Stay

The usual length of stay is 4-7 days. Your stay may be longer if there are complications.

Post-procedure Care

At the HospitalDuring recovery, you may have some of the following:
  • Headache and head discomfort
  • Fatigue and sleepiness
  • Lightheadedness
  • Nausea
  • Emotional lows
Staff will help you manage these problems.Preventing InfectionDuring your stay, the hospital staff will take steps to reduce your chance of infection, such as:
  • Washing their hands
  • Wearing gloves or masks
  • Keeping your incisions covered
There are also steps you can take to reduce your chance of infection, such as:
  • Washing your hands often and reminding your healthcare providers to do the same
  • Reminding your healthcare providers to wear gloves or masks
  • Not allowing others to touch your incision
At HomeWhen you get home, you may have to adjust your activity level while you recover. This may take 4-6 weeks. Home care will include caring for the surgical wound to prevent infection.MRI scans will be done regularly over the next several years. The scans will check to see if the tumor returns.

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