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Axial contrast-enhanced computed tomography of the chest showing repair of descending thoracic aortic dissection with aortic stent-graft. The presence of mural thrombus within the false lumen of the aneurysmally dilated descending thoracic aorta is seen along with focal outpouching of the aneurysm sac containing small foci of gas (short arrows) adjacent to the esophagus (long arrow).
