Algorithm for the diagnosis and management of iliofemoral deep vein thrombosis (DVT). In the absence of severe symptoms, catheter-directed thrombolysis may be considered in selected patients with iliofemoral DVT (dotted line). CAT = cancer-associated thromboembolic disease, CT = computed tomography, IV = intravenous, IVC = inferior vena cava, LMWH = low-molecular-weight heparin, MR = magnetic resonance, UFH = unfractionated heparin, VKA = vitamin K antagonist.



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