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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 ...
Known causes include genetics, maternal illness and injury. Examples of these causes are physical trauma, acoustic neuroma, maternal prenatal illness such as measles, labyrinthitis, microtia, meningitis, Ménière's disease, Waardenburg syndrome, mumps (epidemic parotitis),mastoiditis or due to an overstrained nervus vestibulocochlearis after a brain surgery to close to the nerve.
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 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 ...
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.
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]
Acoustic trauma can occur from a single, loud noise exposure or loud noise over a period of time. One sign of acoustic trauma is ringing in the ears and muffled hearing after a loud sound exposure.
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].