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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 Acoustic Neuroma Association recommends that cell phone users use a hands-free device. Meningiomas are significantly more common in women than in men; they are most common in middle-aged women. Two predisposing factors associated with meningiomas for which at least some evidence exists are exposure to ionizing radiation (cancer treatment of ...
Acoustic neuroma (vestibular schwannoma) – benign neoplasm of Schwann cells affecting the vestibulocochlear nerve Meningioma – benign tumour of the pia and arachnoid mater Ménière's disease – causes sensorineural hearing loss in the low frequency range (125 Hz to 1000 Hz).
The translabyrinthine approach was developed by William F. House, M.D., [2] who began doing dissections in the laboratory with the aid of magnification and subsequently developed the first middle cranial fossa and then the translabyrinthine approach for the removal of acoustic neuroma.
Treatment of spinal nerve sheath tumors typically depends on presence and severity of symptoms. [1] For asymptomatic or incidental schwannomas or neurofibromas, only continued imaging is typically indicated to assess whether tumor growth is occurring. [ 1 ]
A common subtype is the vestibular schwannoma (acoustic neuroma) [5]. Neurofibromas: Benign tumors that grow on nerves, commonly associated with neurofibromatosis type 1 (NF1) [2]. Malignant Peripheral Nerve Sheath Tumors (MPNST): Rare but aggressive cancers that arise from peripheral nerves or nerve sheath cells [6].
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]
Patient response to treatment will vary based on age, health, and the tolerance to medications and therapies. Metastasis occurs in about 39% of patients, most commonly to the lung. Features associated with poor prognosis include a large primary tumor (over 5 cm across), high grade disease, co-existent neurofibromatosis, and the presence of ...