PMC8141980_01
Representative images from the CT angiography of the chest and the right upper extremity: (a) nonocclusive arterial thrombus within the midportion of the aortic arch and (b) partially occlusive thrombus within the right brachial artery.
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Three days after her left AKA, thrombi in her aortic arch (Figure 1(a)), right brachial artery (Figure 1(b)), right ulnar artery, left subclavian artery, and superior vena cava were discovered despite therapeutic anticoagulation with intravenous heparin.
Pathology from left AKA. A small venule that is completely occluded by a non-inflammatory thrombus (white arrow). A vessel with complete destruction of the wall and lumen by acute inflammation, with a red arrow placed on what remains of the vessel wall. An associated small nerve is also seen (black arrowhead).
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The pathology of the left knee revealed vasculitis of the deep muscular arteries and veins, as well as widespread inflammatory and non-inflammatory thrombi (Figure 2).