After a vaginal hysterectomy the patient developed a severe blood clot in the leg from ankle to hip and clots in the lungs. She was then given Coumadin and Fragmin. Before release from the hospital her lungs were clear but the large clot remained. After 2 weeks on Fragmin the Coumadin Clinic advised that the INR was within the safe range the and Fragmin could be discontinued. How will the large clot in the leg break down and be released from the body and is the patient still in danger? She is 41 and has asthsma, but no other recognized defects.