Axial CT with contrast of the abdomen shows the aorta to have a normal caliber in the upper abdomen (above left) and a markedly decreased caliber in the mid-abdomen (above right). Sagittal CT (below left) shows a long length of progressive narrowing of the mid-abdominal aorta. 3D CT (below right) shows moderate stenosis of the abdominal aorta from T12 to L2 and severe ostial stenosis of the celiac artery and superior mesenteric artery and the bilateral renal arteries. The inferior mesenteric artery is enlarged with robust collaterals to the celiac and superior mesenteric circulations. There is sparing of the aortic bifurcation and iliac arteries.
