What are idiopathic venous thrombotic events?

Updated: Jan 05, 2018
  • Author: Paul Schick, MD; Chief Editor: Srikanth Nagalla, MBBS, MS, FACP  more...
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Idiopathic (unprovoked) venous thrombotic events are defined as the occurrence of venous thrombosis in the absence of any of the risk factors listed above. About 50% of patients presenting with a first idiopathic venous thrombosis have an underlying thrombophilia.

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