The evolution of policies in the surgical treatment of acquired cholesteatoma of the tubotympanic cleft.
D002781:Cholesteatoma / Q000601:surgery*; D004427:Ear Diseases / Q000601:surgery; D004432:Ear, Middle / Q000601:surgery; D005064:Eustachian Tube / Q000601:surgery; D006309:Hearing; D006801:Humans; D008722:Methods; D014433:Tympanoplasty