cholesteatoma

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Ahura Mazda - relief of the Zoroastrian god Ahura Mazda at the ancient ruins of Persepolis in Iran. Also known as Ormazd Zoroastrianism,

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cholesteatoma

pathology

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major reference

In ear disease: Chronic middle-ear infection
…by a condition known as cholesteatoma of the middle ear. This is an ingrowth of skin from the outer-ear canal that forms a cyst within the middle ear. An infected cholesteatoma cyst enlarges slowly but progressively, gradually eroding the bone until the cyst reaches the brain cavity, the nerve that…
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tympanic membrane

In tympanic membrane
…susceptibility to otitis media and cholesteatoma (the formation of a cyst in the middle ear).
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