Persistent 5th aortic arch — a great pretender: three new covert cases

摘要: Although persistence of the embryonic fifth aortic arch is considered a rare congenital malformation, analysis records cardiopathological collections Brompton and Killingbeck Hospitals reveals 6 examples in approximately 2000 specimens, an incidence amongst our material 1 330. Since review literature only further 13 described cases, we wonder if condition may go unrecognized rather than being exceedingly rare. This possibility supported by fact that 3 cases were incorrectly interpreted when initially described. In this report, describe details 2 these specimens one other case was not included earlier descriptions malformation. The first had persistent as conduit between pulmonary systemic circulations setting atresia with interruption arch. second demonstrated double lumen arch, instance accessory systemic-to-systemic conduit. final case, to represent aorto-pulmonary window but revealed more keeping presence We conclude powers mimicry enigmatic structure account for its apparent rarity.