Term: Pulmonary Embolism (PE)
Last Updated: 2006-07-20
A pulmonary embolism is a blockage of an artery in the lungs by fat, air, clumped tumor cells, or a blood clot. The most common cause of a pulmonary embolism is a blood clot in the veins of the legs, called a deep vein thrombosis (DVT). Many PE clear up on their own, though some may cause severe illness or even death.