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Tympanosclerosis: review of literature and incidence among patients with middle-ear infection

Published online by Cambridge University Press:  29 June 2007

Saad Asiri ,
Alaa Hasham ,
Fatma Al Anazy ,
Siraj Zakzouk  and
Adel Banjar
Saad Asiri
Affiliation:
Departments of ENT, Security Forces Hospital, Madina, Saudi Arabia.
Alaa Hasham
Affiliation:
Departments of ENT, Security Forces Hospital, Madina, Saudi Arabia.
Fatma Al Anazy*
Affiliation:
Departments of ENT, King Abdul Aziz University Hospital, Madina, Saudi Arabia.
Siraj Zakzouk
Affiliation:
Departments of ENT, Security Forces Hospital, Madina, Saudi Arabia.
Adel Banjar
Affiliation:
Departments of ENT, Riyadh, and Ohud Hospital, Madina, Saudi Arabia.
*
Address for correspondence: Dr Fatma H. Al-Anazy, ENT Department, King Abdul Aziz University Hospital, P.O. Box 245, Riyadh 11411, Saudi Arabia. Fax: (966) 1-477 5748
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Abstract

The aim of the study was to review the literature of tympanoscierosis especially its pathogenesis, to study the general incidence of tympanoscierosis among patients with chronic suppurative otitis media (CSOM), its association with cholesteatoma and also the type of hearing loss as well as its relation to the degree and site of tympanosclerosis.

Seven hundred and seventy-five patients with CSOM were studied retrospectively. A full history was taken and thorough ENT examinations were carried out. Pure tone audiograms (PTA) of all patients were done and analysed. The operative finding of tympanosclerosis as well as middle-ear status were inspected.

The incidence of tympanosclerosis was found to be 11.6 per cent (90 patients out of 775 CSOM cases). Most tympanosclerosis cases had dry ear, (85.6 per cent). Of the 57.8 per cent who had myringosclerosis, their PTA showed an AB gap 20–40 dB. When sclerosis affect both the tympanic membrane and middle ear, 61 per cent of patients had an AB gap >40 dB. The association of cholesteatoma and tympanosclerosis may be regarded as uncommon, 2.2 per cent.

The exact aetiology and pathogenesis of tympanosclerosis is as yet not well known. Our study concentrated on the clinical picture of tympanosclerosis among patients with CSOM. The majority of hearing loss associated with tympanosclerosis was of the conductive type.

Keywords

Otitis media, suppurativeSclerosisHearing loss, conductive
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 113 , Issue 12 , December 1999 , pp. 1076 - 1080
Copyright
Copyright © JLO (1984) Limited 1999

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