title: Sinolith in the ethmoid sinus.
abstract: We report a case of sinolith in the left ethmoid sinus of a 61-year-old man. The patient complained of nasal obstruction. Computed tomography revealed a small, calcified mass associated with a nasal polyp in the left ethmoid sinus. The antrolith and polyp were removed via endoscopic sinus surgery. Histopathological analysis of the antrolith revealed it to be bone-like in formation. The antrolith was about 1 cm in diameter. Infrared spectroscopy revealed that the antrolith contained protein (45 per cent), calcium phosphate (43 per cent) and calcium carbonate (12 per cent).
authors.affiliation: Department of Otorhinolaryngology, Tokyo Electrical Power Company Hospital, Tokyo, Japan. skan@sc.itc.keio.ac.jp
authors.forename: S
authors.initials: S
authors.lastname: Kanzaki
authors.forename: Michiie
authors.initials: M
authors.lastname: Sakamoto
mesh_terms: D002114:Calcinosis / Q000150:complications* / Q000601:surgery; D002137:Calculi / Q000150:complications* / Q000601:surgery; D005005:Ethmoid Sinus; D006801:Humans; D008297:Male; D008875:Middle Aged; D015508:Nasal Obstruction / Q000209:etiology / Q000601:surgery; D009298:Nasal Polyps / Q000150:complications / Q000601:surgery; D010254:Paranasal Sinus Diseases / Q000150:complications* / Q000601:surgery; D016896:Treatment Outcome