vestibular schwannoma


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vestibular schwannoma

a benign but life-threatening tumor arising from Schwann cells, usually of the vestibular division of the eighth cranial nerve in early stage; produces hearing loss, tinnitus, and vestibular disturbances and in late stages cerebellar, brainstem, and other cranial nerve signs and increased intracranial pressure.
Farlex Partner Medical Dictionary © Farlex 2012

acoustic neuroma

A usually benign tumour of the 8th cranial nerve, which arises from the Schwann cells that sheathe the acoustic nerve.
 
Epidemiology
1:100,000; 8% are bilateral; 16% are associated with type-2 von Recklinghausen’s disease.
 
Diagnosis
Auditory evoked potentials, MRI, CT.
 
Management
Surgical removal by dissection, cautery, laser obliteration.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

ves·tib·u·lar schwan·no·ma

(ves-tib'yū-lăr shwah-nō'mă)
A benign but life-threatening tumor arising from Schwann cells, usually of the vestibular division of the vestibulocochlear nerve; produces hearing loss; tinnitus; vestibular disturbances; early and cerebellar, brainstem, and other cranial nerve signs; and increased intracranial pressure in late stages.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
If a specific etiology is identified (eg, vestibular schwannoma), the patient should be referred to a specialist for appropriate treatment.
An update on the treatment of vestibular schwannoma. Acta Otorrinolaringol Esp 2009;60:131-40.
Pathologies such as vestibular schwannomas and neurovascular disturbances of V and VII cranial nerves are mostly managed surgically in this region [2-4].
Sex and age associations with vestibular schwannoma size and presenting symptoms.
Maximum exposure (0.82) was observed in normal temporal bones (with no otitis or vestibular schwannoma).
Funda et al., "Exercise with visual feedback improves postural stability after vestibular schwannoma surgery," European Archives of Oto-Rhino-Laryngology, vol.
Menon, "Intratumoral microhemorrhages on T2*-weighted gradient-echo imaging helps differentiate vestibular schwannoma from meningioma," American Journal of Neuroradiology, vol.
Michele Bailo from Italy talked about Infratentorial lessions focalizing on vestibular schwannoma, primary and secondary treatment with gamma knife.
Mangus BD, Rivas A, Yoo MJ, Alvarez J, Wanna GB, Haynes DS et al: Management of cerebrospinal fluid leaks after vestibular schwannoma surgery.
Because vestibular schwannoma represents for 70-80% of all CPA lesions, meningiomas 10-15% and epidermoid cysts 5%, the few remaining lesions, which account for less than 1% each, are derived from a wide spectrum of lesions that are challenging to diagnose.