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Coarctation of the aorta, or aortic narrowing (abbreviated as CoA), is a congenital condition whereby the aorta narrows in the area where the ductus arteriosus (ligamentum arteriosum after regression) inserts.: Coarctation (narrowing) of the aorta. 1:Inferior vena cava, 2:Right pulmonary veins, 3: Right pulmonary artery, 4:Superior vena cava, 5:Left pulmonary artery, 6:Left pulmonary veins, 7:Right ventricle, 8:Left ventricle, 9:Pulmonary artery, 10:Aorta.
Aortic dissection is a condition that forces the layers of the wall of the aorta apart through increased blood flow. Over time, the pressure of the blood flow can cause the weakened area of the aorta to bulge like a balloon, stretching the aorta, causing aortic dissection and leading to severe, sharp, tearing pain in your chest and back.