title: Symptomatology and surgery of the occult petrosal cholesteatoma.
mesh_terms: D001847:Bone Diseases / Q000601:surgery; D002781:Cholesteatoma / Q000601:surgery*; D004427:Ear Diseases / Q000601:surgery; D004432:Ear, Middle / Q000601:surgery*; D006801:Humans; D010579:Petrous Bone / Q000601:surgery*