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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.
Rotational angiography demonstrated hypoplasia of the aortic arch; distal ascending aorta measured 16 mm, descending limb of the arch 21 mm, and the area of âpresumed coarctationâ 19 mm suggesting a diagnosis of pseudocoarctation rather than a true coarctation (Figure 2).ue to similarities in the clinical and imaging features of hypoplastic aortic arch and pseudocoarctation of aorta, they may be mistaken for true coarctation leading to unnecessary investigations.