title: [Surgery for synchronous primary lung cancers and intrapulmonary metastases].
abstract: Between 1988 and 2000, 1,040 patients with primary lung cancer underwent pulmonary resection at Nagaoka Red Cross Hospital. Thirty-one (2.9%) patients had synchronous primary lung cancer (group A) and 78 patients (7.5%) had intrapulmonary metastases (group B). The 5-year and 10-year survival rate for group A was 64% and 56% respectively and for group B 37% and 32% respectively. The patients in group A showed a better survival rate in the different lobes (80% at 5 years) than in the same lobe (55%), while those in group B gave reverse results (31% and 42%). In group A, the patients had a better survival rate in the different histology (73% at 5 years) than in the same histology (45%). The 5-year survival was 65% for 20 patients with stage I disease, 75% for 4 patients with stage II disease, 43% for 75 patients with stage III and 25% for 10 patients with stage IV. These data suggest that synchronous primary lung cancer had a better prognosis than primary lung cancer with satellite nodules, but the histological discrimination between multiple lung cancers and intrapulmonary metastases was uncertain.
authors.affiliation: Division of Thoracic Surgery, Nagaoka Red Cross Hospital, Nagaoka, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Togashi
authors.forename: H
authors.initials: H
authors.lastname: Hirahara
authors.forename: M
authors.initials: M
authors.lastname: Sugawara
authors.forename: H
authors.initials: H
authors.lastname: Miyamura
authors.forename: Y
authors.initials: Y
authors.lastname: Sato
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000401:mortality / Q000556:secondary* / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000401:mortality / Q000601:surgery*; D012189:Retrospective Studies; D015996:Survival Rate