This information is provided by the National Institutes of Health (NIH) Genetic and Rare Diseases Information Center (GARD).
Cholesteatoma is an abnormal growth of skin in the middle ear behind the eardrum. It can be congenital (present from birth), but it more commonly occurs as a complication of chronic ear infections. Individuals with this condition usually experience a painless discharge from the ear. Hearing loss, dizziness, and facial muscle paralysis are rare but can result from continued cholesteatoma growth. Treatment usually involves surgery to remove the growth.
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