Interrenal coarctation of the abdominal aorta.

We report a case of congenital, segmental, hypoplastic interrenal abdominal aortic coarctation with inadequate collateral circulation. After preoperatively evaluating renal function and intraoperatively measuring vascular pressure, the coarctation was bridged with an aortico-aorta bypass; and an additional bypass graft was placed between the prosthesis and superior mesenteric artery. In this way, besides the successful surgical correction of coarctation, the inverse blood flow in the superior mesenteric artery was reversed to normal.