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Acoustic Neurinoma - Acoustic Neurinoma symptom, treatment, causes
Acoustic Neurinoma is a benign tumour arising in the cells that surrounds the acoustic (hearing) nerve fibres. Acoustic Neurinomas make up 7 % of the brain tumours and mostly occur between the ages of 40 and 60.
Acoustic neurinoma is a non-cancerous tumor that may develop from an overproduction of schwann cells that press on the hearing and balance nerves in the inner ear. A diagnosis of the acoustic neurinoma is best confirmed by magnetic resonance imaging. Both tion of DNA responsible for a particular trait like hair color or skin tone. Acoustic neurinoma results from an overproduction of schwann cells - small, sheet-like cells that normally wrap around nerve fibers like onion skin and help support the nerves. If the tumor becomes large, it can interfere with the facial nerve, causing partial paralysis, and eventually press against nearby brain structures, becoming life-threatening. When growth is abnormally excessive, schwann cells bunch together, pressing against the hearing and balance nerves, often causing gradual hearing loss, tinnitus, and dizziness. Schwann cells are cells that normally wrap around and support nerve fibers. If the tumor becomes large, it can press on the facial nerve or brain structure. Symptoms may develop at any age, but usually occur between the ages of 30 and 60 years.
Early symptoms of Acoustic Neurinoma are loss of hearing and ringing in one ear. As the tumour grows larger it may start to press on the cerebellum (part ofr the brain) and cause gidiness and unsteadiness, or it may effect nearby nerves and disturb facial movements and sensations.
Diognosis of Acoustic Neurinoma is based on hearing tests and magnetic resonance imaging (MRI).
Treatment of Acoustic Neurinoma is by surgical removal.
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