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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.
Enlarged aorta is the abnormal widening of the largest artery of the heart which is the aorta carrying oxygen that supplies to all parts of the human body.This is considered as a serious condition related to the heart. Atherosclerosis â it is known as the hardening of the arteries of the heart. 2  This is the most common cause of enlarged aorta for it will damage mainly the arteries. 3  Injury â sudden force applied which can damage the arteries in specified body parts like the chest and abdomen such as a vehicle accident.