肺癌是一类最常见的恶性肿瘤，其死亡率在癌症致死病因中居首位。D-二聚体

Lung cancer is one of the most common malignant tumors, and its mortality rate ranks first among the causes of cancer deaths. D-dimer is the degradation product of cross-linked fibrin after the action of plasmin. Its increase reflects the hypercoagulable state of blood in the body and the enhancement of fibrinolytic activity. It is one of the most sensitive and accurate indicators at present, and it is the only Directly reflect the index of thrombin and plasmin production. This study intends to collect peripheral blood samples of newly diagnosed NSCLC patients. NSCLC patients are diagnosed by pathology. The changes in peripheral blood D-dimer levels of NSCLC patients before and after surgery are detected. Follow-up for 2 years and record the recurrence and metastasis rate , And explore its relationship with clinical staging and degree of tissue differentiation; ROC curve was used to analyze the relationship between preoperative and postoperative peripheral blood D-dimer levels and recurrence and metastasis of postoperative NSCLC patients.

Lung cancer is one of the most common types of malignant tumors, and its mortality rate is the leading cause of cancer death. D-d polymer is the degradation product of cross-linked fibrin by fibrous lysase, and its increase reflects the high coagulation state and fiber-soluble activity enhancement of blood in the body, which is one of the most sensitive and accurate indicators at present, and is the only index that directly reflects the production of clotting enzymes and fibrosolyzymes. In this study, by collecting exosome blood samples from patients with initial diagnosis of NSCLC, NSCLC patients were diagnosed by pathology and tested for changes in the level of exosome D-D-D polymer before and after surgery in NSCLC patients, follow-up for 2 years, The recurrence metastasis rate of tumor after surgery was recorded, and the relationship between it and clinical stage and tissue differentiation was discussed, and the relationship between preoperative and postoperative weekly blood D-polymer level and relapse metastasis in patients after NSCLC was analyzed by ROC curve.

Lung cancer is one of the most common malignant tumors, and its mortality is the first cause of cancer death. D-dimer is the degradation product of cross-linked fibrin after the action of fibrinolytic enzyme. The increase of D-dimer reflects the hypercoagulable state of blood and the enhancement of fibrinolytic activity. It is one of the most sensitive and accurate indicators at present, and the only indicator that directly reflects the production of thrombin and fibrinolytic enzyme. The purpose of this study is to collect the peripheral blood samples of newly diagnosed patients with NSCLC. All patients with NSCLC were diagnosed by pathology, and then NSCLC was detected The patients were followed up for 2 years to record the tumor recurrence and metastasis rate, and to explore its relationship with clinical stage and degree of tissue differentiation; ROC curve was used to analyze the relationship between preoperative and postoperative D-dimer levels and recurrence and metastasis of NSCLC patients.<br>