PT - JOURNAL ARTICLE AU - Khaldoon Shaheen AU - M. Chadi Alraies AU - Abdul Hamid Alraiyes AU - Richard Christie TI - Factor V Leiden: How great is the risk of venous thromboembolism? AID - 10.3949/ccjm.79a.11072 DP - 2012 Apr 01 TA - Cleveland Clinic Journal of Medicine PG - 265--272 VI - 79 IP - 4 4099 - http://www.ccjm.org/content/79/4/265.short 4100 - http://www.ccjm.org/content/79/4/265.full SO - Cleve Clin J Med2012 Apr 01; 79 AB - The factor V Leiden mutation, the most common inherited cause of thrombophilia, causes a mild hypercoagulable state. We describe a 29-year-old man, heterozygous for factor V Leiden, who developed extensive pulmonary emboli with concomitant bilateral deep venous thrombosis, likely provoked by prolonged immobility during a car trip. We then review the diagnosis, therapy, screening, and prognosis of venous thromboembolism related to factor V Leiden.