title: Subcarinal bronchogenic cyst with high carbohydrate antigen 19-9 production.
abstract: In a rare case of bronchogenic cyst with high carbohydrate antigen (CA) 19-9 production, a 57-year-old man with coughing and chest pain was diagnosed with a subcarinal mediastinal tumor. Fiberoptic bronchoscopy showed an erosive mucosal lesion overlying the area of extrinsic compression at the membranous of the right mainstem bronchus. Serum carbohydrate antigen 19-9 was elevated at 1300 U/ml. Thoracotomy showed an encapsulated cyst tightly adhering to the right main bronchus. The cyst was extirpated after ablation at the adherent cystic wall by electrocautery. Although intracystic carbohydrate antigen 19-9 concentration was very high, serum carbohydrate antigen 19-9 and bronchoscopic findings returned to normal postoperatively. The histological diagnosis was consistent with a bronchogenic cyst and carbohydrate antigen 19-9 could be immunohistochemically demonstrated within its epithelium.
authors.affiliation: Department of Surgery, National Minami-Fukuoka Chest Hospital, Japan.
authors.forename: Kan
authors.initials: K
authors.lastname: Okabayashi
authors.forename: Akira
authors.initials: A
authors.lastname: Motohiro
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Ueda
authors.forename: Kaoru
authors.initials: K
authors.lastname: Ondo
authors.forename: Katsunobu
authors.initials: K
authors.lastname: Kawahara
authors.forename: Takayuki
authors.initials: T
authors.lastname: Shirakusa
mesh_terms: D001994:Bronchogenic Cyst / Q000175:diagnosis* / Q000276:immunology / Q000601:surgery; D001999:Bronchoscopy; D018395:CA-19-9 Antigen / Q000097:blood*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013902:Radiography, Thoracic
chemical_list: D018395:CA-19-9 Antigen