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A clinical, genetic and audiological study of patients and families with unilateral vestibular schwannomas. II. Audiological findings in 93 patients with unilateral vestibular schwannomas

Published online by Cambridge University Press:  29 June 2007

W. J. Neary ,
V. E. Newton ,
S. N. Laoide-Kemp ,
R. T. Ramsden ,
V. F. Hillier  and
S. W. Kan
W. J. Neary*
Affiliation:
Centre for Audiology, Education of the Deaf and Speech Patholgy (CAEDSP) University of Manchester, University of Manchester, Manchester, UK.
V. E. Newton
Affiliation:
Centre for Audiology, Education of the Deaf and Speech Patholgy (CAEDSP) University of Manchester, University of Manchester, Manchester, UK.
S. N. Laoide-Kemp
Affiliation:
Centre for Audiology, Education of the Deaf and Speech Patholgy (CAEDSP) University of Manchester, University of Manchester, Manchester, UK.
R. T. Ramsden
Affiliation:
Department of Otolaryngolgy, Head Neck Surgery, University of Manchester, Manchester, UK.
V. F. Hillier
Affiliation:
Manchester Royal Infirmiry and the Computational Group, University of Manchester, Manchester, UK.
S. W. Kan
Affiliation:
Manchester Royal Infirmiry and the Computational Group, University of Manchester, Manchester, UK.
*
Address for correspondence: W. J. Neary, Centre of Audiology, Education of the Deaf and Speech Pathology (CAEDSP), University of Manchester, Oxford Road, Manchester M13 9PL. Fax: 0161 275 3519.
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Abstract

Ninety-three patients with histolofically or radiolofically confiemd unilateral vestibular schwannomas were recruited. Audiological testing for retrocochelar pathology was undertaken. Patients' hospital records were examined for previous audiological and radiological results.

The audiometric configuration was designated as one of the following normal, sloping, low frequency, peak, through or falt. A sloping sensorneural audiometric configuration was present in 68 pec cent of cases. No significant correlation was found between tumour size and average pure tone threshold 500 HZ to 4000 HZ, optimum discrimination score or interaural differences for wave V. Ninety-one per cent of cases had abnoramalities on auditory evoked potential; 92 per cent of cases showed abnormalities on stapedial reflex testing.

The limitations of audiologica testing in the investigation of patients with suspected unilateral vestibular schwannomas are discussed. A protocol for the investigation of such patients is presented.

Keywords

Vestibular schwannomaNeurofibromatosis Type 2Audiology
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 110 , Issue 12 , December 1996 , pp. 1120 - 1128
Copyright
Copyright © JLO (1984) Limited 1996

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