High dimer is associated with tumors. Dimer is a kind of substance produced by the degradation of fibrin, and the phenomenon of elevated dimer is mostly considered to be related to thrombotic diseases such as pulmonary embolism, deep vein embolism, etc., but it may also be caused by tumors; in addition, it may also be caused by physiological factors such as prolonged bed rest and pregnancy. Tumor patients are prone to the release of pro-coagulant substances, and after a large amount of substances are carried into the blood, coagulation and thrombosis are likely to occur, thus causing high dimerization, but it does not mean that a high dimerization is 100% tumor, and it needs to be determined in combination with other symptoms and examination indexes. If you find elevated indicators, it is recommended to consult a doctor for further examination to clarify the cause of elevation and carry out targeted treatment.