title: [meta-analysis of serum tumor markers in lung cancer].
abstract: OBJECTIVE
  the detection of serum tumor markers is of great value for early diagnosis of lung cancer. The aim of this study is to summarize the clinic significance characteristics of serum markers contributing to the detection of lung cancer.
  
  
  METHODS
  references about serum markers of lung cancer were estimated using meta-analysis method. 712 references which included more than 20 cases, 20 controls, the serum markers of 52 832 patients with malignancies and 32 037 patients as controls were evaluated.
  
  
  RESULTS
  overall the detection of 13 markers play a significant part in lung cancer diagnosis. The sensitivity of CEA, CA125, CYFRA21-1, TPA, SCCAg, DKK1, NSE, ProGRP in the patients' serum with lung cancer were 47.50%, 50.11%, 57.00%, 50.93%, 49.00%, 69.50%, 39.73%, 51.48% and the specificity were 92.34%, 80.19%, 90.16%, 88.41%, 91.07%, 92.20%, 89.11%, 94.89%. In the combined analysis of tumor markers: the sensitivity, specificity of NSE+ProGRP were 88.90% and 72.82% in diagnosis of small cell lung cancer, respectively. In diagnosis of squamous corcinoma, the sensitivity and specificity of TSGF+SCCAg+CYFRA21-1 were 95.30% and 74.20%. The the sensitivity and specificity of CA153+Ferrtin+CEA were 91.90% and 44.00% in diagnosis of lung cancer.
  
  
  CONCLUSIONS
  although the assay of tumor markers in serum is useful for diagnosis of early lung cancer, the sensitivity and specificity are low. Combined detection of these tumor markers could increase sensitivity and specificity.
authors.affiliation: Cancer Center, Daping Hospital and Surgery Research Institute, Third Military Medical University, Chongqing 400042, China.
authors.forename: Xianfeng
authors.initials: X
authors.lastname: LU
authors.forename: Xueqin
authors.initials: X
authors.lastname: YANG
authors.forename: Zhimin
authors.initials: Z
authors.lastname: ZHANG
authors.forename: Dong
authors.initials: D
authors.lastname: WANG
mesh_terms: D014408:Biomarkers, Tumor / Q000097:blood*; D006801:Humans; D008175:Lung Neoplasms / Q000097:blood* / Q000175:diagnosis
chemical_list: D014408:Biomarkers, Tumor