It's called deep vein thrombosis, or DVT. All our veins have small valves powered by the muscles around them. They keep blood moving toward the heart, instead of flowing backward inside veins.

Deep vein thrombosis (DVT) is a blood clot (thrombus) in a deep vein, usually in the legs. These clots require medical care right away. These clots are dangerous because they can break loose, travel ...

Blood clots, or thrombosis, especially in the legs (DVT), pose serious health risks. Extended inactivity, trauma, medical ...

The objective of this study was to investigate the risk of acute internal jugular, subclavian, and axillary deep venous thrombosis (upper torso DVT [UTDVT]) and pulmonary embolism (PE) and the ...