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A-D. A 60-year-old man with left-extremity deep venous thrombosis (DVT) developed filter-related inferior vena cava (IVC) thrombosis. A. Venogram revealed a sign of “filling defect” within the IVC, indicating thrombus (black arrow). B. A thrombolytic catheter was placed within the thrombus via the right femoral vein (white arrow). C. Follow-up venogram revealed complete resolution of thrombus (grade III). D. The filter was retrieved successfully.
