What is the difference between a neuroma and a schwannoma?
Acoustic neuromas arise from Schwann cells, which wrap around and support nerve fibers, hence the name vestibular schwannoma. Schwannomas can occur on any cranial or peripheral nerve in the body, but in the brain, acoustic neuromas are the most common schwannomas.
What causes vestibular schwannoma?
What Causes a Vestibular Schwannoma? The exact cause of most vestibular schwannomas is unknown. Ninety-five percent of tumors occur spontaneously and are found on one side (unilateral) only. A small subset of vestibular schwannomas is associated with a genetic condition called Neurofibromatosis Type 2 (NF2).
What is bilateral acoustic schwannomas?
Bilateral vestibular schwannomas affect both hearing nerves and are usually associated with a genetic disorder called neurofibromatosis type 2 (NF2). Half of affected individuals have inherited the disorder from an affected parent and half seem to have a mutation for the first time in their family.
Can a brain MRI show acoustic neuroma?
An MRI can help accurately diagnose an acoustic neuroma because the characteristics of these tumors look particularly unique compared to other brain tumors.
Where is vestibular schwannoma located?
An acoustic neuroma (also known as a vestibular schwannoma) is a benign tumor that originates on the eighth cranial nerve, which connects the inner ear with the brain. This nerve, called the vestibulocochlear nerve, is involved in transmitting sound and sending balance information from the inner ear to the brain.
What are the symptoms of multiple sclerosis?
Multiple sclerosis. Multiple sclerosis. In multiple sclerosis, the protective coating on nerve fibers (myelin) is damaged and may eventually be destroyed. Depending on where the nerve damage occurs, MS can affect vision, sensation, coordination, movement, and bladder and bowel control. Multiple sclerosis (MS) is a potentially disabling disease
What are the symptoms of optic neuritis in multiple sclerosis?
Optic neuritis, neuromyelitis optica, blurred vision, poor contrast or color vision, and pain on eye movement can be frightening — and should be evaluated promptly. People with MS may feel off balance or lightheaded, or — much less often — have the sensation that they or their surroundings are spinning (vertigo).
What are the symptoms of blurred vision in MS?
Onset of blurred vision, poor contrast or color vision, and pain on eye movement can be frightening — and should be evaluated promptly. Dizziness and Vertigo People with MS may feel off balance or lightheaded, or — much less often — have the sensation that they or their surroundings are spinning (vertigo).
What are the symptoms of dysarthria in multiple sclerosis (MS)?
Speech problems, including slurring (dysarthria) and loss of volume (dysphonia) occur in approximately 25-40% of people with MS, particularly later in the disease course and during periods of extreme fatigue. Stuttering is occasionally reported as well. One quarter of people diagnosed with MS experience diminished taste.