 Some possibilities include obesity, trauma, surgery, cancer, Factor V Leiden deficiency (as well as other inherited disorders-prothrombin gene mutation, deficiencies in protein C, protein S, or antithrombin III, and disorders of plasminogen), and Lupus anticoagulant. 
Some possibilities include obesity , trauma , surgery , cancer , Factor V Leiden deficiency ( as well as other inherited disorders - prothrombin gene mutation , deficiencies in protein C , protein S , or antithrombin III , and disorders of plasminogen ) , and Lupus anticoagulant .