Aberrant right subclavian artery: further observations

Aberrant right subclavian artery in Down syndrome fetuses

“…In trisomy 21, there is a high incidence of anatomical abnormalities in the cardiovascular system, including complex heart anomalies, isolated atrioventricular and ventriculer septal defects, single or multiple intracardiac echogenic foci, pericardial effusion, tricuspid regurgitation, and aberrant right subclavian artery . Developmental aortic arch anomalies are seen in 1–2% of fetuses, and aberrant right subclavian artery (ARSA) is the most common variety . ARSA is characterized by abnormal origination of the right subclavian artery directly from descending aorta instead of the brachiocephalic trunk.…”

“…1 Developmental aortic arch anomalies are seen in 1-2% of fetuses, and aberrant right subclavian artery (ARSA) is the most common variety. [2][3][4] ARSA is characterized by abnormal origination of the right subclavian artery directly from descending aorta instead of the brachiocephalic trunk. Although the real prevalance is not known, data from postnatal autopsies, catheterisation series, and from prenatal screening studies conclude that ARSA is present in 0.4-2.3% of the low-risk population.…”

Aortic dissection with extension to a patent ductus arteriosus

“…Abnormal elastic fibers and muscular planes of the vessel wall have been implicated in congenital true aneurysm and/or dissection of congenitally abnormal vessel such as the extraordinary widening of an aberrant right subclavian artery, unusually large ductus diverticula or aneurysm of a cervical arch or an unusually large diverticulum of Kommerell [9][10][11][12].…”

Aberrant right subclavian artery aneurysm

“…Aberrant right subclavian artery is one of the most common developmental anomalies arising from the aortic arch, 1 with a reported incidence of 0.4–2.3% 2 . We report a case of an aberrant right subclavian artery aneurysm.…”