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A small vestibular schwannoma arising from the inferior vestibular nerve

Published online by Cambridge University Press:  08 March 2006

D. M. Baguley ,
S. E. M. Jones  and
D. A. Moffat
D. M. Baguley
Affiliation:
Department of Audiology, Addenbrooke’s Hospital, Hills Road, Cambridge, UK.
S. E. M. Jones
Affiliation:
Department of Otolaryngology, Addenbrooke’s Hospital, Hills Road, Cambridge, UK.
D. A. Moffat
Affiliation:
Department of Otolaryngology, Addenbrooke’s Hospital, Hills Road, Cambridge, UK.
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Abstract

The investigation of a complaint of unilateral right sensorineural hearing loss led to the identification of a right 3 mm vestibular schwannoma arising from the inferior division of the right vestibular nerve. On investigation the patient was found to have normal caloric function, this being mediated by the superior vestibular nerve. Both transient and distortion product otoacoustic emissions were absent in the right ear, and ABR was abnormal on this side. These findings are of interest as they indicate that this small lesion produced a hearingloss that was both cochlear and retrocochlear. The anatomical finding that the medial auditory efferents run within the inferior vestibular nerve is considered. This patient did not experience tinnitus or hyperacusis despite the site of the lesion arising from the inferior vestibular nerve.

Keywords

Neuroma AcousticHearing Loss Sensorineural
Type
Research Article
Information
The Journal of Laryngology & Otology , Volume 117 , Issue 6 , June 2003 , pp. 498 - 500
Copyright
© Royal Society of Medicine Press Limited 2003

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