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Fig. 7A —24-year-old man with Loeys-Dietz syndrome and complicated cardiovascular history. He underwent repair of aortic root at age of 8 years and developed aortic arch dissection at age 17 years. Subsequent imaging revealed 5-cm thoracoabdominal aortic aneurysm with chronic dissection, and patient's entire descending and abdominal aortas were replaced with Dacron (polyethylene terephthalate fiber, DuPont) graft. The patient developed pancreatitis due to large aneurysm of superior mesenteric artery (Figs. 11A, 11B, and 11C). In the next month, he was found to have 2.8-cm left internal carotid artery aneurysm, repaired with graft. Additional aneurysms have been identified in innominate, bilateral subclavian, vertebral, common carotid, internal thoracic, and common iliac (Figs. 11A, 11B, and 11C) arteries. Sagittal multiplanar reformation from IV contrast-enhanced MDCT scan shows bilobed, thrombosed pseudoaneurysm (arrowheads) in left lung apex that was previously treated with coil embolization.