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Venous thrombosis
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Venous thrombosis occurs when a blood clot forms inside a vein. The clot takes up part of the space through which blood should flow, like a plug that forms inside a tube rather than entering it from outside.
If a clot in a deep vein breaks loose, it is no longer fixed in place and travels with the blood. It can reach the lungs and cause a pulmonary embolism. Venous thrombosis and pulmonary embolism are connected by that movement, but they refer to clots in different locations.
In brief
Venous thrombosis occurs when a blood clot forms inside a vein.
If a clot in a deep vein breaks loose, it can travel through the bloodstream to the lungs and cause a pulmonary embolism.
Sources (1)
- National Heart, Lung, and Blood InstituteWhat Is Venous Thromboembolism?
This page explains the topic in general terms; it does not tell anyone what treatment to follow.
Updated