Venous thromboembolism; Lung blood clot; Blood clot - lung; Embolus; Tumor embolus; Embolism - pulmonary
A pulmonary embolus is a blockage of an artery in the lungs by fat, air, a blood clot, or tumor cells.
A pulmonary embolus is most often caused by a blood clot in a vein, especially a vein in the leg or in the pelvis (hip area). The most common cause is a blood clot in one of the deep veins of the thighs. This type of clot is called a deep vein thrombosis (DVT). The DVT breaks off and travels to the lungs.
Less common causes include air bubbles, fat droplets, amniotic fluid, or clumps of parasites or tumor cells, all of which may lead to a pulmonary embolus.
Risk factors for a pulmonary embolus include:
People with certain clotting disorders may also have a higher risk.
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