An acoustic neuroma is a benign (noncancerous) tumor on the eighth cranial nerve leading from the brainstem to the ear. This nerve is involved in hearing and maintaining equilibrium. Acoustic neuromas grow relatively slowly.
Auditory brainstem response test (ABR, BAER, or BSER)—a test that measures the rate of electric impulses traveling from the inner ear to the brainstem
A slowed or absent impulse may indicate the presence of an acoustic neuroma. This test is almost always abnormal in the presence of an acoustic neuroma.
Electronystagmography—Cold and warm water or air is inserted in the ear canal, and the resulting dizziness and rapid eye movement is recorded.
—a test that uses magnetic waves to make pictures of the inside of the body
—a type of
that uses a computer to make pictures of the inside of the body
Treatment depends on your age, general health, the size and location of the tumor, and its rate of growth. Treatment may include:
If the tumor is very small, your doctor may just monitor its growth. This is common among people over age 70.
As the tumor grows and/or hearing becomes impaired, removal of the tumor may be necessary. The surgical approach depends on the size and location of the tumor. Complications of surgery may include permanent hearing loss and/or paralysis of facial muscles on the affected side.
. In order to reduce the incidence of complications intraoperative monitoring of hearing can be done using auditory brainstem response test.
The use of radiation to kill cells and shrink tumors. Radiation is expected to prevent further growth of the tumor. Radiation may be used when tumors are small and surgery is not possible. This method may preserve hearing.
There are no guidelines for preventing the development of an acoustic neuroma because the cause is not usually known.
Please be aware that this information is provided to supplement the care
provided by your physician. It is neither intended nor implied to be a
substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER
IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the
advice of your physician or other qualified health provider prior to
starting any new treatment or with any questions you may have regarding a