Isolated retroaortic innominate vein and right aortic arch: a case report and review of literature

Abstract

Retroaortic course of left innominate vein is a rare venous anomaly which is usually associated with CHD. Isolated retroaortic innominate vein is exceedingly rare with only a handful of reported cases. We report an otherwise healthy newborn with isolated retroaortic innominate vein and right aortic arch, a combination which has previously not been reported.

Prenatal ultrasound diagnosis of fetal isolated left innominate vein under the aortic arch: A case report

“…The left innominate vein is formed by the confluence of the left subclavian vein and the left common jugular vein, which returns to the right superior vena cava at the upper edge of the aortic arch and posterior to the thymus before entering the right atrium 1 . Abnormalities of the left innominate vein are a rare venous malformation, with a prevalence of approximately 0.02%–0.37% in the general population and about 0.5%–1.7% in individuals with congenital heart disease 2,3 . These abnormalities can manifest in various locations, and are often concomitant with other congenital heart diseases 4 .…”

“…1 Abnormalities of the left innominate vein are a rare venous malformation, with a prevalence of approximately 0.02%-0.37% in the general population and about 0.5%-1.7% in individuals with congenital heart disease. 2,3 These abnormalities can manifest in various locations, and are often concomitant with other congenital heart diseases. 4 Among them, the isolated left innominate vein beneath the aortic arch is exceedingly rare, and is missed or misdiagnosed can significantly complicate and increase the risk associated with cardiac interventional procedures.…”