Chronic mastoiditis; characteristics in Mexico.
D000328:Adult; D002781:Cholesteatoma / Q000209:etiology; D005260:Female; D006801:Humans; D008297:Male; D008417:Mastoiditis / Q000150:complications / Q000473:pathology* / Q000601:surgery*; D014432:Tympanic Membrane / Q000473:pathology