[Structure and classification of acquired cholesteatoma].
D000367:Age Factors; D002781:Cholesteatoma / Q000145:classification / Q000209:etiology; D002784:Cholesterol; D004428:Ear Neoplasms / Q000145:classification / Q000209:etiology; D004848:Epithelium; D006801:Humans
D002784:Cholesterol
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