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Facial nerve paralysis and meningioma of the internal auditory canal

Published online by Cambridge University Press:  08 March 2006

M. P. Hilton ,
D. M. Kaplan ,
L. Ang  and
J. M. Chen
M. P. Hilton
Affiliation:
Department of Otorhinolaryngology, Sunnybrook and Women’s College Health Science Centre, University of Toronto, Canada.
D. M. Kaplan
Affiliation:
Department of Otorhinolaryngology, Sunnybrook and Women’s College Health Science Centre, University of Toronto, Canada.
L. Ang
Affiliation:
Department of Anatomic Pathology, Sunnybrook and Women’s College Health Science Centre, University of Toronto, Canada.
J. M. Chen
Affiliation:
Department of Otorhinolaryngology, Sunnybrook and Women’s College Health Science Centre, University of Toronto, Canada.
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Abstract

Pathological lesions confined to the internal auditory canal (IAC) commonly present with cochleovestibular symptoms; sensorineural hearing loss, tinnitus and balance disturbance. The commonest lesion of the IAC is vestibular schwannoma. Other lesions include meningioma, facial neuroma, cavernous haemangioma, lipoma and arachnoid cyst. Presentation with facial palsy and an intracanalicular lesion is suggestive of pathology other than acoustic neuroma. Magnetic resonance imaging (MRI) cannot reliably distinguish intracanalicular vestibular schwannomas from meningiomas. Particular care is required for surgery of these lesions: the facial nerve typically does not lie in a protected anterior position within the IAC.

Keywords

MeningiomaFacial Paralysis
Type
Research Article
Information
The Journal of Laryngology & Otology , Volume 116 , Issue 2 , February 2002 , pp. 132 - 134
Copyright
© Royal Society of Medicine Press Limited 2002

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