title: [A case of true pulmonary carcinosarcoma].
abstract: A 72-year-old male was admitted to our hospital because of dyspnea. A chest radiograph showed a mass shadow measuring 40 x 40 mm in the left lower lobe, and fiberoptic bronchoscopy revealed obstruction of the left B8 by the tumor. Adenocarcinoma was suspected after a transbronchial biopsy, and left lower lobectomy was performed. Histologically, the resected specimen was composed of carcinomatous and sarcomatous elements, and further immunohistological study revealed that the former component was poorly differentiated squamous cell carcinoma and the latter was fibrosarcoma. We therefore concluded that the tumor was a true carcinosarcoma of the lung.
authors.affiliation: Department of Pulmonology, Nagahama City Hospital.
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Takahashi
authors.forename: Nobuhiro
authors.initials: N
authors.lastname: Ono
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Noguchi
authors.forename: Kunihiko
authors.initials: K
authors.lastname: Kamakari
authors.forename: Kenji
authors.initials: K
authors.lastname: Inui
mesh_terms: D000368:Aged; D002296:Carcinosarcoma / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000601:surgery; D008297:Male