Objective: Lung cancer is often associated with hypercoagulability. Thromboelastography provides integrated information on clot formation in whole blood. This study explored the possible relationship between thromboelastography and lung cancer.
Methods: Lung cancer was staged according to the Tumor, Node, and Metastasis (TNM) classification system. Thromboelastography parameters in different stages of disease were compared. The value of thromboelastography for stage prediction was determined by area under the receiver operating characteristic curve analysis.
Results: A total of 182 patients diagnosed with lung cancer were included. Thromboelastography parameters, including kinetics time, α-angle, and maximum amplitude, differed significantly between patients with metastatic and limited lung cancers (P < 0.05). Kinetics time was significantly reduced and maximum amplitude was significantly increased in patients with stage I and II compared with stage III and IV tumors (P < 0.05). TNM stage was significantly negatively correlated with kinetics time (r = -0.186), and significantly positively correlated with α-angle (r = 0.151) and maximum amplitude (r = 0.251) (both P < 0.05). The area under the curve for kinetics time in patients with stage I cancer was 0.637 (P < 0.05) and that for α-angle in stage ≥ II was 0.623 (P < 0.05). The areas under the curves for maximum amplitude in stage ≥ III and stage IV cancer were 0.650 and 0.605, respectively (both P < 0.05). Thromboelastography parameters were more closely associated with TNM stage in patients with lung adenocarcinoma than in the whole lung cancer population.
Conclusion: This study identified the diagnostic value of thromboelastography parameters for determining tumor stage in patients with lung cancer. Thromboelastography can be used as an independent predictive parameter for lung cancer severity.
Keywords: Coagulation; cancer stage; lung adenocarcinoma; lung cancer; thromboelastography.