Azygous Right Internal Carotid Artery with Congenital Absence of the Cervical Left Internal Carotid Artery Associated with Bilateral Aberrant Subclavian Arteries: A

Abstract

Congenital absence of the internal carotid artery is a rare vascular anomaly. Incidence associated with an anomalous aortic arch with aberrant both right and left subclavian arteries is unique. Although often asymptomatic, developmental anomalies of the cervicocerebral vasculature have become increasingly common incidental findings due to the widespread use of cross-sectional imaging. We present the unique case of a 60-year-old female admitted for bacterial meningitis, with imaging incidentally diagnosing congenital absence of the left internal carotid artery associated with a midline, “azygous”, right internal carotid artery, as well as an anomalous aortic arch with bilateral aberrant subclavian arteries.