Rare Association of Retroaortic Innominate Vein and Coarctation of Aorta with Hypoplastic Left Aortic Arch: Embryology Review of Retroaortic Innominate Vein

摘要

The retroaortic course of the left innominate vein is a rare entity which can be misinterpreted during echocardiography for other abnormal vascular structures under the aortic arch. We reported the case of a 2- w e e k - o l d f e m a l e i n f a n t w h o s e echocardiogram showed coarctation of the aorta and 2 vascular structures beneath the hypoplastic left aortic arch, one of which was traced to be a retroaortic left innominate vein. Right aortic arch is a common association.1 More than 80% of the patients with anomalous retroaortic left innominate vein have obstruction of the right ventricular outflow tract (Tetralogy of Fallot).2 However, our patient has a left sided aortic arch with hypoplastic transverse arch and juxtaductal coarctation of aorta without any right ventricular outflow tract obstruction.