title: [Diagnostic value of determination of CEA, CA125, CA153 and CA199 assay in pleural fluid for lung cancer].
abstract: BACKGROUND
  To study the diagnostic value of detection of carcinoembryonic antigen (CEA), cancer antigen 125 (CA125), cancer antigen 153 (CA153) and cancer antigen 199 (CA199) in pleural fluid samples for lung cancer.
  
  
  METHODS
  Immunoprotein quantity of CEA, CA125, CA153 and CA199 was analyzed in pleural fluid and serum from patients with lung cancer (52 cases) and in pleural fluid from non cancerous patients (50 cases) by chemiluminescence.
  
  
  RESULTS
  The levels of CEA, CA125, CA153 and CA199 in pleural fluid of patients with lung cancer were significantly higher than those of non cancerous patients ( P < 0.01 or P < 0.05). In lung cancer patients, the levels of CEA, CA125, CA153 and CA199 in pleural fluid were obviously higher than those in serum ( P < 0.01 or P < 0.05). The sensitivity and the specificity of CEA+CA199 were 96.2% and 96.0%, respectively.
  
  
  CONCLUSIONS
  Detection of CEA, CA125, CA153 and CA199 in pleural fluid might be helpful for diagnosing lung cancer, and the optimal combination for assay is CEA+CA199.
authors.affiliation: Pathological Diagnosis Center, The First Affiliated Hospital, China Medical University, Shenyang, Liaoning 110001, P.R.China.
authors.forename: Guangping
authors.initials: G
authors.lastname: Wu
authors.forename: Jing
authors.initials: J
authors.lastname: Ba
authors.forename: Enhua
authors.initials: E
authors.lastname: Wang
authors.forename: Yuee
authors.initials: Y
authors.lastname: Teng
authors.forename: Xia
authors.initials: X
authors.lastname: Fan