Figure 5b. Coronal volume-rendered images obtained in a 25-year-old man at follow-up after surgery for midaortic dysplastic syndrome. Note the long, narrowed aorta in a (small arrows) and the left-sided aortic bypass with stenosis at the lower end (arrowhead). The superior mesenteric aorta was also stenotic (not shown). A meandering mesenteric artery (large arrow) connects the inferior and superior mesenteric arteries. The extraanatomic left-sided aortic bypass (arrows) and a surgically implanted endoprosthesis (arrowhead) are visible in b.