Thrombosis refers to abnormal, life-threatening blood clots that form in the artery or vein.
A clot in the vein (usually in the leg or pelvis) is known as deep vein thrombosis (DVT) and a clot that breaks off and travels to the lungs is know as a pulmonary embolism (PE). Together, DVT and PE make up venous thromboemolism (VTE). Venous thromboembolism is a leading cause of death and disability worldwide. In Europe and the U.S. it claims more lives than AIDS, Breast and prostate cancer and motor vehicle crashes combined.