Abstract:The incidence of deep venous thrombosis (DVT) of lower limbs is higher in the patients suffered from cancers than that in the general population. DVT complicated with cancers caused by many reasons, such as hypercoagulability, endothelial injury, stasis of blood and so on. And due to its serious consequences to the victims, the prevention and early diagnosis of DVT is very important. However, today there is still no definite standard for preventative anticoagulation in the patients of cancer.

Key words:Venous thrombosis,Neoplasms,Risk factors,Primary prevention