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A vestibular schwannoma (VS), also called acoustic neuroma, is a benign tumor that develops on the vestibulocochlear nerve that passes from the inner ear to the brain. The tumor originates when Schwann cells that form the insulating myelin sheath on the nerve malfunction. Normally, Schwann cells function beneficially to protect the nerves which ...
The most reliable indicator for acoustic neuromas from the ABR is the interaural latency differences in wave V: the latency in the impaired ear is prolonged. Different studies have indicated the sensitivity of ABR for detection of acoustic neuromas 1cm or larger to be between 90 and 95%. Sensitivity for neuromas smaller than 1cm are 63-77%.
Patients with these tumors often have signs and symptoms corresponding to compression of both nerves. Acoustic neuroma (vestibular schwannoma) – benign neoplasm of Schwann cells affecting the vestibulocochlear nerve; Meningioma – benign tumour of the pia and arachnoid mater
The review focused on studies of brain cancer and other cancers of the central nervous system—including glioma, meningioma, acoustic neuroma, pituitary tumors, and more.
Acoustic neuroma - a slow-growing, benign tumor of the acoustic nerve. [2] Symptoms, which most often start after the age of 30, can include dizziness, headache, vertigo, loss of balance, ringing sensations, and numbness. [3] Ganglioneuroma - a tumor of the sympathetic nerve fibers arising from neural crest cells. [4]
NF2 is a genetically transmitted condition. Diagnosis is most common in early adulthood (20–30 years); however, it can be diagnosed earlier. NF2 can be diagnosed due to the presence of a bilateral vestibular schwannoma, or an acoustic neuroma, which causes a hearing loss that may begin unilaterally. [14]
Neurofibromatosis type II, in which bilateral acoustic neuromas (tumors of the vestibulocochlear nerve or cranial nerve 8 (CN VIII) also known as schwannoma) develop, often leading to hearing loss. [16] Schwannomatosis, in which painful schwannomas develop on spinal and peripheral nerves. [17]
But those first migraine warning signs can be subtle and unexpected, including symptoms like difficulty concentrating, sleep disturbances, food cravings, neck pain and yawning.