A Review of Seven Congenital Cholesteatoma of the Middle Ear
선천성 중이진주종 7례의 발병기전을 중심으로 본 임상적 분석
박, 기현; 전, 영명; 이, 동훈; 구, 성모
Taehan Ibi Inhukwa Hakhoe chi, 39(3):382-390, 1996
Taehan Ibi Inhukwa Hakhoe chi; Journal of the Korean Otolaryngological Society; 대한이비인후과학회지
Congenital cholesteatoma of the middle ear is a rare clinical entity that classically presents as a pearly epidermal cyst seen behind the normal tympanic membrane. Many otologists have speculated on the pathogenesis of congenital
tympanic ring, epithelial inclusions resulting from invagination of otic capsule or from defective closure of the neural tube, metaplasia, epidermoid formation), but lack of further study has been due to the rarity of this abnormality.
In this study, we reviwed 7 cases of congenital cholesteatoma to determine its pathogenesis by analysing findings of operation and temporal bone computed tomography.
This review supports 'Lack of tympanic ring theory(Aimi, 1983)' as proposed mechanism of congenital cholesteatoma, and strongly favors aberrant migration of squamous epithelium from a distant source in the genesis of congenital cholesteatoma.
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