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FIG 1. Simplified schematic illustration of the pathophysiologic process of carotid artery dissection proceeding from the acute stage to either spontaneous healing (1), formation of false lumen (2), residual stenosis of varying degree or complete occlusion (3), and formation of a pseudoaneurysm (4). A stent is used in cases that have not responded to medical therapy either to relieve a hemodynamically significant stenosis, to occlude a false lumen, or to serve as a scaffold to enable coil embolization of a wide-necked pseudoaneurysm
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