A rare aortic arch anomaly: Combination of vertebral arteria lusoria with Kommerell's diverticulum, bovine aortic arch, and left vertebral artery with extreme proximal origin

Abstract

Vertebral arteria lusoria (VAL), defined as the right vertebral artery (VA) originating from the aortic arch distally to the left subclavian artery (SCA) and progressing retroesophageally, is a rare vascular anomaly. This anomaly is rarely associated with abnormalities such as aortic coarctation, Bovine aortic arch, and Kommerell’s diverticulum. It is uncommon for VAs to originate from the SCA below the level of the 1st rib. To our knowledge, no instance of VAL has been described, in which the left VA originates from the SCA below the first rib. We aimed to present computed tomography findings in a patient with VAL, Kommerell’s diverticulum, Bovine aortic arch, and a left VA with the extreme proximal origin, which could be also defined as “vertebrosubclavian trunk,” in this case report.