Subject is a (b)(6) female enrolled in preserve on (b)(6) 2016 and had an option¿ elite ivc filter by argon placed.Anticoagulation therapy is contraindicated, as subject is pre-op for neurosurgery.Medical history includes hypertension requiring medication, a current malignancy and current right lower extremity dvt limited to below the popliteal vein.On (b)(6) 2016 during the three month follow up visit, new left lower extremity swelling was observed.An ultrasound was obtained and it demonstrated a new clot in the left lower calf.The subject was on anticoagulation medication and was discharged to home.An ultrasound is planned prior to filter removal.The site reported the event was an acute episode, and considered resolved without sequelae on (b)(6) 2016.On (b)(6) 2017, the filter was successfully retrieved without complications.
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