Sen H.S.Abakay O.Dalli A.Sezgi C.Abakay A.Coskunsel M.2024-04-242024-04-2420121840-2291https://hdl.handle.net/11468/24910Aim: In this study, we investigated the potential utility of some simple, rapid, biochemical tests that detect the tumor markers interleukin 6 (IL-6), interleukin 8 (IL-8), tumor necrosis factor alpha (TNF?), C reactive protein (CRP), and carcinoembryonic antigen (CEA) in diagnosing malignant pleural effusions (MPEs) in exudative pleural fluids. Material and Methods: The study included 70 patients who had exudative PEs. The presence of CRP, CEA, IL-6, IL-8, and TNF? were investigated in the patients' pleural fluids. The cases were grouped into a malignant pleural effusion (PE) group (n = 27) and a benign PE group (n = 43) according to their etiological diagnosis, and the median levels of CRP, CEA, IL-6, IL-8, and TNF? in the two groups were compared. Results: The levels of pleural fluid CEA and IL-6 were significantly higher in the malignant PE group compared with the benign PE group (p <0.01 and p = 0.002, respectively). A meaningful difference was not found between the median value of the pleural fluid CRP IL-8 and TNF? levels in the two groups (p >0.05). We used Roc curve analysis to determine the sensitivity and specificity of CEA as a marker of malignant pleural effusion. When the CEA cut-off point was 1 ng/ml, the sensitivity was found to be 85%, and the specificity was found to be 51%. When the CEA cutoff point was 17 ng/ml, the sensitivity was 29%, and the specificity was 97%. Conclusion: Although the number of cases in the study is low, our findings suggested that CEA and IL-6 may be useful in distinguishing whether exudative PEs are malignant or benign.eninfo:eu-repo/semantics/closedAccessCeaIl-6Malignant Pleural EffusionArticle65161116172-s2.0-84863192766N/A