Cholesteatoma with perforated tympanic membrane.
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Cholesteatoma
Board Highlights
- Cystic, 1-4 cm diameter lesion within the middle ear canal that derives from a nest of keratinized squamous epithelial overgrowth or mucus-secreting epithelium.
- If the inflammatory medium surrounding the cholesteatoma becomes severe enough, it may erode into the ear ossicles and cause conductive hearing loss.
References
Image Reference
- Cholesteatoma with perforated tympanic membrane.
- Photograph by Michael Hawke, MD