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FIG 3. Plaque ulceration.
A, CT angiogram of the common carotid artery 1 cm below the bifurcation shows circumferential arterial wall thickening, with a focal contrast-containing defect interpreted as an ulcer (arrow).
B, Corresponding histologic section shows a ruptured fibrous cap (C) with a mixture of necrotic debris (A) and thrombus (T) projecting into the lumen (Lu).
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