KBB-Forum 2005 , Cilt 4, Sayı 1

HISTOPATHOLOGIC CHANGES IN EXTERNAL EAR CANAL, OSSICULAR CHAIN AND MASTOID ANTRUM IN CHRONIC OTITIS MEDIA

Dr. Huntürk ATİLLA1, Dr. Ahmet URAL2, Dr. Suat ÖZBİLEN2
1Elmadağ Devlet Hastanesi, Kulak-Burun-Boğaz Kliniği, Ankara, Türkiye
2Gazi Üniversitesi Tıp Fakültesi, Kulak-Burun-Boğaz AD, Ankara, Türkiye Permanent histopathologic changes being more prominent in middle ear mucoperiosteum and mastoid air cells, happen within the compartments of ear in variable extents in chronic otitis media.. These histopathologic changes consist of inflammation, granulation, polyp formation, changes in bone tissue like osteitis, osteoneogenesis and bone erosion, subepithelial gland and goblet cell formation, squamous metaplasia, cholesterol granuloma formation, tympanosclerosis, and thickening in mucoperiosteum. These changes are responsible for sequela and complications existing in chronic otitis media.

In our clinic, 88 patients who had been diagnosed to have chronic otitis media were operated between 1999-2001 and samples had been obtained from these patients during surgical intervention. These samples were taken from the bony posterior wall of external auditory meatus, the mastoid antrum and the ossicles. The prevalances of histopathologic changes in these structures were estimated and compared with findings from similar studies. Especially the histopathologic changes existing due to bony erosion caused by these lesions was overlooked again using the data provided by the literature. Keywords : Chronic otitis media, histopathologic change, mastoid antrum, posterior wall of external auditory meatus, ossicular chain.