title: [Association of chronic obstructive pulmonary disease and lung cancer].
abstract: OBJECTIVE
  To investigate the association between chronic obstructive pulmonary disease (COPD) and lung cancer.
  
  
  METHODS
  A case-control study was undertaken, with 180 cases of lung cancer and 200 cases of controls.
  
  
  RESULTS
  The odd of lung cancer was higher in patients with COPD, emphysema, chronic bronchitis, and pulmonary tuberculosis (P < 0.05). The odd of lung cancer increased significantly in patients with a family history of lung cancer or COPD (P < 0.05). The odd of lung cancer also increased when forced expiratory volume in one second (FEV1) < 80%.
  
  
  CONCLUSIONS
  Patients with COPD or a family history of COPD have higher risk of lung cancer.
authors.forename: Dan
authors.initials: D
authors.lastname: Pu
authors.forename: Huai-rong
authors.initials: HR
authors.lastname: Tang
authors.forename: Tao-you
authors.initials: TY
authors.lastname: Zhou
authors.forename: Wei-min
authors.initials: WM
authors.lastname: Li
authors.forename: Tao
authors.initials: T
authors.lastname: Yuan
authors.forename: Yan
authors.initials: Y
authors.lastname: Huang
mesh_terms: D016022:Case-Control Studies; D005541:Forced Expiratory Volume; D006801:Humans; D008175:Lung Neoplasms / Q000453:epidemiology*; D029424:Pulmonary Disease, Chronic Obstructive / Q000453:epidemiology*; D012307:Risk Factors