title: The Spanish Society of Pulmonology and Thoracic Surgery Lung Cancer Cooperative Group-II registry. A descriptive study.
abstract: OBJECTIVE
  The seventh edition of the TNM classification, together with undeniable advantages, has limitations. The International Association for the Study of Lung Cancer (IASLC) Staging Committee has designed an international prospective study to improve this classification. A group of thoracic surgeons and pulmonologists was established in the Spanish Society of Pulmonology and Thoracic Surgery (SEPAR) Oncology area, and created a registry of new lung cancer (LC) cases to participate in this project. The aim of this paper is to describe the main characteristics of the patients included.
  
  
  METHODS
  Prospective, observational, multicentre, multiregional data collection (epidemiological, clinical, therapeutic and, especially, anatomical extension) study, according to the IASLC protocol, to analyse its prognostic value.
  
  
  RESULTS
  Two thousand, four hundred and nineteen patients (83.6% men) from 28 hospitals were included. Ninety-six percent of the men and 54% of the women were smokers or ex-smokers. Chest/abdominal computed tomography (CT) scanning was performed in over 90% and positron emission tomography (PET)/CT scanning in 51.5% of cases. Among the 1035 patients who underwent surgery, 77% had early stages (ia to iib), and 61.6% of those treated using other methods had stage iv. Respiratory comorbidity was higher in men (47.9% versus 21.4%). The most common histological subtype was adenocarcinoma (34%), especially in non-smoking women (69.5%).
  
  
  CONCLUSIONS
  The proportion of women and adenocarcinomas, as well as those resected at an early stage, increased among LC cases in Spain.
authors.affiliation: Sección de Neumología, Hospital San Pedro de Alcántara, Cáceres, España; CIBER de Enfermedades Respiratorias (CIBERES), España. Electronic address: juli1949@separ.es.
authors.forename: Julio
authors.initials: J
authors.lastname: Sánchez de Cos Escuín
authors.forename: Mireia
authors.initials: M
authors.lastname: Serra Mitjans
authors.forename: Jesús
authors.initials: J
authors.lastname: Hernández Hernández
authors.forename: Helena
authors.initials: H
authors.lastname: Hernández Rodríguez
authors.forename: José
authors.initials: J
authors.lastname: Abal Arca
authors.forename: Isaura
authors.initials: I
authors.lastname: Parente Lamelas
authors.forename: Pablo
authors.initials: P
authors.lastname: León Atance
authors.forename: Ana
authors.initials: A
authors.lastname: Núñez Ares
authors.forename: Luis
authors.initials: L
authors.lastname: Miravet Sorribes
authors.forename: Ana Isabel
authors.initials: AI
authors.lastname: Blanco Orozco
authors.forename: Rosario
authors.initials: R
authors.lastname: Melchor ĺñiguez
authors.forename: Luis
authors.initials: L
authors.lastname: García Arangüena
authors.forename: Antonio
authors.initials: A
authors.lastname: Arnau Obrer
authors.forename: Ricardo
authors.initials: R
authors.lastname: Guijarro Jorge
authors.forename: José
authors.initials: J
authors.lastname: Padilla Alarcón
authors.forename: Juan Carlos
authors.initials: JC
authors.lastname: Peñalver Cuesta
authors.forename: Manuel
authors.initials: M
authors.lastname: Mariñán Gorospe
authors.forename: Esther
authors.initials: E
authors.lastname: Fernández Araujo
authors.forename: Gloria
authors.initials: G
authors.lastname: Francisco Corral
authors.forename: Sara
authors.initials: S
authors.lastname: Cerezo González
authors.forename: Guillermo
authors.initials: G
authors.lastname: González Casaurrán
authors.forename: Sara
authors.initials: S
authors.lastname: Naranjo Gozalo
authors.forename: Carlos
authors.initials: C
authors.lastname: Álvarez de Arriba
authors.forename: Manuel
authors.initials: M
authors.lastname: Núñez Delgado
authors.forename: M Teresa
authors.initials: MT
authors.lastname: González Budiño
authors.forename: Ramón
authors.initials: R
authors.lastname: Magaroles
authors.forename: Leonardo
authors.initials: L
authors.lastname: de Esteban Júlvez
authors.forename: M José
authors.initials: MJ
authors.lastname: Pavón Fernández
authors.forename: José Antonio
authors.initials: JA
authors.lastname: Gullón Blanco
authors.forename: Beatriz
authors.initials: B
authors.lastname: de Olaiz Navarro
authors.forename: Ignacio
authors.initials: I
authors.lastname: Escobar Campuzano
authors.forename: Iván
authors.initials: I
authors.lastname: Macía Vidueira
authors.forename: Santiago
authors.initials: S
authors.lastname: García Barajas
authors.forename: Jorge
authors.initials: J
authors.lastname: Herrero Collantes
authors.forename: Jorge
authors.initials: J
authors.lastname: Freixenet Gilabert
authors.forename: Alberto
authors.initials: A
authors.lastname: Saura Vinuesa
mesh_terms: D000230:Adenocarcinoma / Q000453:epidemiology / Q000473:pathology / Q000601:surgery; D000368:Aged; D002289:Carcinoma, Non-Small-Cell Lung / Q000453:epidemiology / Q000473:pathology / Q000601:surgery; D002294:Carcinoma, Squamous Cell / Q000453:epidemiology / Q000473:pathology / Q000601:surgery; D015897:Comorbidity; D016208:Databases, Factual; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000145:classification* / Q000453:epidemiology / Q000473:pathology / Q000601:surgery / Q000628:therapy; D008297:Male; D008875:Middle Aged; D064847:Multimodal Imaging; D009367:Neoplasm Staging; D011013:Pneumonectomy / Q000379:methods; D049268:Positron-Emission Tomography; D011379:Prognosis; D011446:Prospective Studies; D015272:Pulmonary Medicine; D012042:Registries; D012907:Smoking / Q000453:epidemiology; D012955:Societies, Medical; D013903:Thoracic Surgery; D014057:Tomography, X-Ray Computed
keywords: Clasificación TNM; Cáncer de pulmón; Lung cancer; Multicentre registry; Registro multicéntrico; TNM classification