Deep Vein Thrombosis | Overview

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What is deep vein thrombosis?

Deep vein thrombosis (also called DVT) is a blood clot in a vein deep inside your body. These clots usually occur in your leg veins. While DVT is a fairly common condition, it is also a dangerous one. If the blood clot breaks away and travels through your bloodstream, it could block a blood vessel in your lungs. This blockage (called a pulmonary embolism) can be fatal.

Written by familydoctor.org editorial staff

Reviewed/Updated: 01/11
Created: 09/04

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