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| Heart and blood vessel problems - pulmonary embolism [Go Back to Keywords List Page]  | pulmonary embolism
A pulmonary embolism occurs when a blood clot travels
through the bloodstream and becomes lodged in an artery in
your lungs. These blood clots usually form in the deep
veins of the legs. If they detach from the wall of a vein,
they can move to the lungs. The clot may then block
an artery, reducing blood flow through the lungs and to the
heart. This can damage the heart and even be fatal.
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