title: Preservation of the posterior canal wall. The wide external auditory canal technique.
mesh_terms: D002781:Cholesteatoma / Q000601:surgery*; D004424:Ear Canal / Q000601:surgery*; D004427:Ear Diseases / Q000601:surgery*; D004432:Ear, Middle / Q000601:surgery; D006801:Humans; D008416:Mastoid / Q000601:surgery; D008722:Methods; D012665:Semicircular Canals; D014433:Tympanoplasty