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A) Axial unenhanced computed tomography (CT) image shows a crescent-shaped thickening of the aortic wall (arrowheads) with greater attenuation than the lumen. B) Oblique contrast-enhanced CT image shows a localized blood-filled pouch (arrow) protruding into the intramural hematoma from the aortic lumen, characteristic for ulcer-like projection. C) Intraoperative findings of 1.5 cm linear-shaped intimal tear (arrow) just below the origin of innominate artery.
