​Surgery Definition – What are the risk factors of deep vein thrombosis? 

​Surgery Definition – What are the risk factors of deep vein thrombosis? 
The risk factors of deep vein thrombosis are varicose veins, pelvic tumor, orthopedic and gynecological surgery, previous cases of deep vein thrombosis, smoking, oral contraceptive intake, hypercoagulable states such as protein S deficiency and protein C deficiency, elderly and intravenous drug users.