“…After the initial diagnosis by DUS, additional imaging techniques such as CT or magnetic resonance venography can be performed to provide information on the location and extent of the thrombosis and its possible underlying cause, such as an extrinsic obstructing mass. In this review, some patients underwent CT due to suspected abdominal pathology 9,12,27 and inferior vena cava (IVC) filter thrombosis. 10,11 As an alternative, a more aggressive approach was used, including venography, with the advantage of performing immediate catheter-directed thrombolysis (CDT), 14,17,20,[24][25][26]29,31,34 venous thrombectomy, 8,23,34 IVC filter insertion, 23,34 or a combination of these.…”