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Acoustic Neuroma

Statistics of Acoustic Neuroma

Neuroscience physicians are constantly building a database of statistics on acoustic neuroma to help them better understand the condition and long-term effects of treatment. While the information is vitally relevant to furthering medical knowledge, each individual’s situation is unique and they should rely on the advice and expertise of their neurosurgeon.

Some relevant facts about acoustic neuroma:

  • each year, 1 in 100,000 people develops
  • acoustic neuromaacoustic neuromas are caused by a genetic malfunction involving chromosome 22
  • unilateral acoustic neuromas (affecting only one ear)
    • occurs in about 8% of all cases of tumors in the skull
    • symptoms usually appear between ages 30 and 60, but may develop at any age
    • is not hereditary
  • bilateral acoustic neuroma (affecting both ears)
    • is hereditary
    • may appear as early as the teenage years
    • each child of a parent with the condition has a 50% chance of developing the condition, too
  • brain or ear canal surgery can usually remove the tumor completely
  • half of patients with small tumors may retain hearing after surgery
  • most patients with small tumors experience no facial paralysis following surgery
  • about 2/3 of patients with large tumors have some degree of permanent facial paralysis

Locations for Acoustic Neuroma