Condition in which a blood clot forms in a vein or artery, causing loss of circulation to the area served by the vessel. If it breaks away, it often travels to the lungs, causing pulmonary embolism.
Thrombosis in veins of the legs is often seen in association with
phlebitis, and in arteries with
atheroma. Thrombosis increases the risk of heart attack and stroke. It is treated by surgery and/or anticoagulant drugs.
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