[contentuser]

Causes and Risk Factors

Although deep venous thrombosis may develop with no known cause, it often occurs as a result of conditions following surgery (e.g., reduced blood flow, damage to the lining of a vein). Once a blood clot forms, the clot or a portion of the clot may break away and travel to the lung, resulting in a pulmonary embolism. Risk for these conditions increases with age.

There are a number of risk factors for deep vein thrombosis. People who have more than one risk factor at...Read the full article