[Venous thromboembolic disease].

Prevention and treatment of venous thrombosis and pulmonary embolism have improved dramatically in the last few years owing to: 1) better control of the coumarin activity with the International Normalized Ratio system; 2) appearance on the market of the low-weight molecular heparins and enlargement of their field of prescription; 3) indications of thrombolysis in severe pulmonary embolism; 4) availability of inferior vena cava filters, effective in preventing recurrent pulmonary embolism.