Patient allegedly received an implant on (b)(6) 2010 via the right common femoral vein due to history of pulmonary embolism(pe), per medical record received.Per a (b)(6) 2010 unsuccessful filter retrieval: "after several attempts, passage of the micro guidewire to the inferior vena cava was not possible, suggesting occlusion of the superior vena cava.Injection of contrast, also revealed tortuous, collateral venous filling in the neck.Impression: patent inferior vena cava with no clot formation noted.Getting access to the superior vena cava, because of the occlusion of the vein was not possible".Per a (b)(6) 2019 computed tomography (ct) abdomen: "ivc filter: there is an intact ivc filter with anterior tilt, 19.1 degrees.Tip of the ivc filter is located at the level of the left renal vein and 2 cm superior to the right renal vein.Four of the struts extend 3 mm beyond the lumen of the the ivc at the right anterior, right posterior, left posterior, and left anterior aspects.There is calcified thrombus extending over a length of 2.9 cm, extending 1.1 cm superiorly from the tip of the ivc filter".
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