12/31/2023 0 Comments Auditory nerve neuroma![]() ![]() ![]() You need only one changed gene to be affected by this type of disorder. It's located on one of the nonsex chromosomes, called autosomes. In an autosomal dominant disorder, the changed gene is a dominant gene. These tumors are known as bilateral vestibular schwannomas. People with neurofibromatosis type 2 usually have growth of tumors on the hearing and balance nerves on both sides of the head. This gene change is inherited in people with a rare disorder called neurofibromatosis type 2. Often there is no known cause for an acoustic neuroma. Typically, this gene produces a tumor suppressor protein that helps control the growth of Schwann cells covering the nerves.Įxperts don't know what causes this problem with the gene. The cause of acoustic neuromas can sometimes be linked to a problem with a gene on chromosome 22. See a health care professional if you notice hearing loss in one ear, ringing in your ear or balance problems.Įarly diagnosis of an acoustic neuroma may help keep the tumor from growing large enough to cause complications such as total hearing loss. Rarely, an acoustic neuroma may grow large enough to compress the brainstem and become life-threatening. ![]() ![]() Facial numbness and, very rarely, weakness or loss of muscle movement.Ringing in the affected ear, known as tinnitus.Hearing loss usually occurs on one side or is worse on one side. In rare cases, hearing loss can be sudden. Hearing loss, usually gradually over months to years.Blood vessels or brain structures also can be affected by an acoustic neuroma.Īs the tumor grows, it may be more likely to cause more noticeable or worse symptoms.Ĭommon symptoms of an acoustic neuroma include: The tumor also can put pressure on nearby nerves controlling facial muscles, known as the facial nerve, and sensation, known as the trigeminal nerve. Symptoms may occur because of the tumor's effects on the hearing and balance nerves. Symptoms of an acoustic neuroma are often easy to miss and may take years to develop. Treatments for an acoustic neuroma include monitoring, radiation and surgical removal. Rarely, it may grow quickly and become large enough to press against the brain and affect vital functions. An acoustic neuroma is usually slow-growing. Another name for an acoustic neuroma is vestibular schwannoma.Īn acoustic neuroma develops from the Schwann cells covering the vestibular nerve. Pressure from an acoustic neuroma can cause hearing loss, ringing in the ear and problems with balance. Branches of the nerve directly affect balance and hearing. This nerve is called the vestibular nerve. In some cases, the tumor may grow and affect the cerebellum or other brain tissues, as shown in the magnetic resonance imaging (MRI) scan and illustrations above.Īn acoustic neuroma is a noncancerous tumor that develops on the main nerve leading from the inner ear to the brain. The pressure on the nerve from the tumor may cause hearing loss and imbalance. These nerves lead from your inner ear to the brain, as shown in the top image. It develops on the balance nerve, known as the vestibular nerve, and on the auditory nerve, known as the cochlear nerve. An acoustic neuroma, also known as a vestibular schwannoma, is a noncancerous tumor. ![]()
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