A greenfield filter was implanted on (b)(6) 2004.On (b)(6) 2017 the patient had a ct scan of their abdomen.The imaging showed that an azygous vein was patent and the ivc fills above the occluded filter via the azygous system.In addition, 2 tines of the filter were fractured.On (b)(6) 2019 the patient had a ct scan of their abdomen and imaging showed that the top of the filter is seen at the suprarenal ivc with the filter coursing across the bilateral renal veins.The spires extend beyond the lumen of the ivc which is small proximal to the filter.
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