Inverted papilloma of the middle ear and mastoid.
D004428:Ear Neoplasms / Q000473:pathology* / Q000601:surgery; D004432:Ear, Middle / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D008416:Mastoid / Q000473:pathology* / Q000601:surgery; D008875:Middle Aged; D010212:Papilloma / Q000473:pathology* / Q000601:surgery; D012888:Skull Neoplasms / Q000473:pathology* / Q000601:surgery