thrombosis The formation of a blood clot (thrombus) in the heart or blood vessels. Thrombosis commonly occurs in the legs and is associated with varicose veins but is more serious if it occurs in the heart or in the brain arteries. Detachments from a thrombus in the legs may be carried to the lungs as an embolus (see embolism; this may have a fatal outcome if large vessels are occluded. The treatment includes anticoagulants. See also deep vein thrombosis. Related category HEALTH AND DISEASE Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |