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Acute aortic dissection (DeBakey type II) and true saccular aneurysm. The patient was a 55-year-old woman with a 33-year history of SLE. She was taking 15 mg of prednisolone daily. She also had an IVC filter implanted for deep vein thrombosis. 3D-CT showed aortic dissection (DeBakey type II, white arrow) and a true saccular aneurysm at the distal arch (red arrow). 3D-CT = three-dimensional computed tomography, IVC = inferior vena cava, SLE = systemic lupus erythematosus.
