(HealthDay News) -- Deep vein thrombosis (DVT) occurs when a blood clot forms within a deep vein, most often in the calf or thigh area.
The American Academy of Orthopaedic Surgeons offers this list of risk factors that may increase the likelihood of DVT:
- Having had a pulmonary embolism or a previous case of deep vein thrombosis.
- Having had cancer that has spread.
- Having had another vein condition, such as varicose veins.
- Being a smoker.
- Taking estrogen.
- Being pregnant.
- Being obese.
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