title: Atelectasis, retraction pockets and cholesteatoma.
mesh_terms: D000293:Adolescent; D000328:Adult; D002781:Cholesteatoma / Q000209:etiology*; D004427:Ear Diseases / Q000209:etiology*; D004432:Ear, Middle / Q000473:pathology; D005500:Follow-Up Studies; D006801:Humans; D014432:Tympanic Membrane / Q000473:pathology*