When Arteria lusoria meets Truncus bicaroticus: one of the rarest combinations of aortic arch anomalies

Abstract

The Arteria lusoria or aberrant right subclavian artery (ARSA) constitutes one of the rarest malformations of the aortic arch, it can be associated with other congenital anomalies of the heart and large vessels, in particular the bi-carotid trunk or common origin of the carotid arteries (COCA) which is the presence of a single branch from the aorta giving off both right and left common carotid arteries. We report the case of a patient followed for severe mitral stenosis, and hospitalized for an ischemic cerebral vascular accident, a chest CT scan was performed in front of her clinical and biological degradation, which allowed the fortuitous discovery of an Arteria lusoria (aberrant retro- esophageal artery) associated with a Truncus bicaroticus.

Unusual Source of Dysphagia in a Man in His Eighth Decade of Life

“…Computed tomography angiography showed an anomalous right subclavian artery and bovine carotid trunk consistent with the diagnosis of arteria lusoria, Adachi and Williams classification type H-1 (Figure). This embryologic variant of an anomalous subclavian artery arising distal to the origin of the left subclavian artery on the aortic arch has an incidence of 0.5% to 2% . Arteria lusoria combined with truncus bicoriticus, or common origin of the carotid arteries, is rare with a prevalence of less than 0.05%.…”