how long can you have a pulmonary embolism without knowing

What is a Pulmonary Embolism? Pulmonary embolism (PE) is a potentially life-threatening medical condition characterized by the blockage of one or more blood vessels in the lungs. It occurs when a blood clot, usually formed in the deep veins of the legs (a condition known as deep vein thrombosis or DVT, travels through the bloodstream…