Acoustic neuroma

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Symptoms

By Mayo Clinic staff

The signs and symptoms of acoustic neuroma develop from the tumor pressing on the adjacent nerves, or nearby blood vessels or brain structures.

As the tumor grows, it may be more likely to cause signs and symptoms, although tumor size doesn't always determine effects. It's possible for a small tumor to cause significant signs and symptoms.

Signs and symptoms may include:

  • Hearing loss, usually gradual — although in some cases sudden — and occurring on only one side or more pronounced on one side
  • Ringing (tinnitus) in the affected ear
  • Unsteadiness, loss of balance
  • Dizziness (vertigo)
  • Facial numbness and weakness

In rare cases, an acoustic neuroma may grow large enough to compress the brainstem and be life-threatening.

When to see your doctor
See your doctor if you notice any hearing loss, ringing in your ear, or trouble with your balance. Early diagnosis of an acoustic neuroma may help keep the tumor from growing large enough to cause serious consequences, such as total hearing loss or a life-threatening buildup of fluid within your skull.

References
  1. Acoustic neuroma. American Hearing Research Foundation. http://www.american-hearing.org/disorders/acoustic-neuroma/. Accessed June 14, 2010.
  2. Vestibular schwannoma (acoustic neuroma) and neurofibromatosis. National Institute on Deafness and Other Communication Disorders. http://www.nidcd.nih.gov/health/hearing/acoustic_neuroma.asp. Accessed June 14, 2010.
  3. Park JK, et al. Vestibular schwannoma (acoustic neuroma). http://www.uptodate.com. Accessed June 14, 2010.
  4. Radiosurgery practice guideline initiative: Stereotactic radiosurgery for patients with vestibular schwannomas. International RadioSurgery Association. 2006: #4-06. http://www.irsa.org/AN%20Guideline.pdf. Accessed June 14, 2010.
DS00803 Sept. 8, 2010

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