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Venograms of a 48-year old man with extensive bilateral deep venous thrombosis.
A: Thrombosis of the left iliofemoral vein segment.
B: Chronic IVC occlusion to the level of the renal veins.
C: Partial recanalization of the iliac veins after 24 hours of thrombolysis and 35 mg r-tPA.
D: After completed thrombolysis, a hydrophilic guide wire was passed through the chronic IVC occlusion and grasped by a snare at the level of the right atrium.
