title: Lung cancer as a second primary malignant tumor: prognostic values after surgical resection.
abstract: Prognostic values of lung cancers as second primary malignant tumors (LC-as-SPTs) developed after a different type of first primary malignant tumor were analyzed. Forty-three patients underwent surgery for first primary malignant tumors and later for LC-as-SPTs. The most frequent first primary tumors were: 14 laryngo-pharyngeals; 7 lungs; and 5 colons. Only metachronous cases were included in our study, and the disease-free intervals (DFI) between the first and second primary tumors were divided into two groups: shorter than 36 months (DFI<36), and longer than 36 months (DFI>36). The survival was calculated from the time of surgery for LC-as-SPT. The 5-year overall survival rate was 38%. By univariate analysis, the 5-year survival was significantly lower in cases with DFI<36 months (25%) than in cases with DFI>36 months (43%) (P=0.045), and in male (27%) than in female (62%) (P=0.032), and in N1 (31%) and N2 (0%) cases than in N0 (49%) cases (P=0.001). Using multivariate analysis with the previous factors, only the lymph node metastasis (P=0.001) had a significant impact on survival. The survival after LC-as-SPTs was shorter than after first primary lung cancer cases, and lymph node involvement had a significant impact on the postoperative survival based on uni- and multivariate analysis.
authors.affiliation: Department of Surgery, University of Szeged, Pécsi u. 4. H-6720, Szeged, Hungary. jfurak@hotmail.com
authors.forename: József
authors.initials: J
authors.lastname: Furák
authors.forename: Imre
authors.initials: I
authors.lastname: Troján
authors.forename: Tamás
authors.initials: T
authors.lastname: Szöke
authors.forename: Antal
authors.initials: A
authors.lastname: Wolfárd
authors.forename: Ernest
authors.initials: E
authors.lastname: Nagy
authors.forename: István
authors.initials: I
authors.lastname: Németh
authors.forename: László
authors.initials: L
authors.lastname: Tiszlavicz
authors.forename: György
authors.initials: G
authors.lastname: Lázár
mesh_terms: D000328:Adult; D000368:Aged; D003110:Colonic Neoplasms / Q000401:mortality*; D018572:Disease-Free Survival; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007822:Laryngeal Neoplasms / Q000401:mortality*; D008175:Lung Neoplasms / Q000401:mortality / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D016609:Neoplasms, Second Primary / Q000401:mortality / Q000601:surgery*; D010610:Pharyngeal Neoplasms / Q000401:mortality*; D011013:Pneumonectomy / Q000379:methods*; D012189:Retrospective Studies; D015996:Survival Rate / Q000639:trends; D013997:Time Factors