患者男,74岁。突发右下肢肿胀、疼痛3 d,外院多普勒超声诊断为:右下肢股静脉、腘静脉血栓形成,给予低分子肝素抗凝和外周尿激酶溶栓治疗7 d(用法、用量不详)效果欠佳,右下肢肿胀疼痛症状未缓解,为进一步治疗转至我院。入院后行CT提示右侧髂静脉、股静脉血栓形成,部分血栓延伸至下腔静脉,左位下腔静脉(图1)。后行 Male patient, 74 years old. Sudden right lower extremity swelling and pain 3 d, outside the hospital Doppler ultrasound diagnosis: right lower extremity femoral vein, popliteal vein thrombosis, given low molecular weight heparin anticoagulant and peripheral urokinase thrombolytic therapy 7 d (usage, dosage unknown) effect Poor, right lower extremity swelling pain symptoms did not alleviate, go to our hospital for further treatment. Post-admission CT prompted the right iliac vein, femoral vein thrombosis, some thrombosis extends to the inferior vena cava, left inferior vena cava (Figure 1). After the line