title: Revision mastoidectomy.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002908:Chronic Disease; D006801:Humans; D008416:Mastoid / Q000601:surgery*; D008417:Mastoiditis / Q000601:surgery*; D010033:Otitis Media / Q000601:surgery*; D012086:Reoperation