title: [Comparative survival study between the old and new bronchogenic carcinoma classification].
abstract: BACKGROUND
  A new classification of bronchogenic carcinoma has been made by the International Association for the Study of Lung Cancer (IASLC) and published by Frank C. Detterbeck et al in the journal Chest (2009). The Thoracic Surgery Department of the Gerona (Spain) University Hospital has re-staged a series of patients with bronchogenic carcinoma who had attempted curative surgery, with the aim of comparing the survival (survival for T, survival for M, and survival by disease staging) between the old and new classification, and also to determine whether these changes in survival are statistically significant. Another one of the objectives of the study is to see whether there is agreement between the current survival of our surgical series and that published by the IASLC.
  
  
  METHODS
  Data on 855 patients who had attempted bronchogenic carcinoma curative surgery were entered into a data base. They were radiologically, clinically and histologically staged according to the new and old staging. Survival was calculated according to the T, M, N, and histology stages. A statistical analysis was performed using the SPSS program and the changes in survival between both classifications were analysed.
  
  
  RESULTS
  No statistically significant changes were observed in survival (P=.58) with the new classification in stage IIA, but there were statistically significant changes in survival (P=.0001) in stage IIIB.
  
  
  CONCLUSIONS
  The study confirms that the current TNM classification is useful, since it shows changes in survival in 2 histological stages (one of them statistically significant). The survival data of our series now fits better with those provided by the IASLC.
authors: Servicio de Cirugía Torácica, Hospital Universitario de Gerona Dr. Josep Trueta, España. sandra_toracica@hotmail.com
authors: Sandra
authors: S
authors: Martínez-Somolinos
authors: Matilde Magdalena
authors: MM
authors: Rubio-Garay
authors: Edwin Emilio
authors: EE
authors: Mármol-Cazas
authors: Xavier
authors: X
authors: Baldó-Padró
authors: Juan Carlos
authors: JC
authors: Penagos-Tafurt
authors: Fernando
authors: F
authors: Sebastián-Quetglás
authors: María del Mar
authors: Mdel M
authors: García-Gil
mesh_terms: D002283:Carcinoma, Bronchogenic / Q000145:classification* / Q000401:mortality* / Q000473:pathology; D006801:Humans; D008175:Lung Neoplasms / Q000145:classification* / Q000401:mortality* / Q000473:pathology; D009367:Neoplasm Staging; D016019:Survival Analysis