title: Primary carcinoma of the middle ear and mastoid.
mesh_terms: D000328:Adult; D000368:Aged; D004428:Ear Neoplasms / Q000453:epidemiology* / Q000473:pathology; D004432:Ear, Middle; D005260:Female; D006801:Humans; D008297:Male; D008416:Mastoid; D008875:Middle Aged; D009549:Nigeria; D012888:Skull Neoplasms / Q000453:epidemiology* / Q000473:pathology