The explanation for acoustic neuromas — tumors on the most nerve leading from your inner ear to your brain (vestibulocochlear nerve) — seems to be a malfunctioning gene on chromosome twenty two. Normally, this gene produces a protein that helps management the expansion of Schwann cells covering the nerves. What makes this gene malfunction is not clear. Scientists do understand the faulty gene is inherited in regarding the cases of neurofibromatosis two, a rare disorder that usually involves the expansion of tumors on the vestibulocochlear nerve on both sides of the top (bilateral neuromas).
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