LOCATIONS OF PRIMARY CHOLESTEATOMA

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  • 1 January 1987
    • journal article
    • research article
    • Vol. 8 (1), 61-65
Abstract
Primary cholesteatomas (PCs) are embryologic residual nests in the middle ear cleft. Based on a study of 56 cases (48 of them from the literature), a new classification is suggested: (1) tympanic cavity PC (71% of the cases), and (2) temporal bone PC (29%). Among the tympanic cavity cases a significant number (63%) were found in the anterosuperior quadrant. The findings support the embryologic theory for the origin of PC.

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