Aberrant Right Vertebral Artery From Descending Thoracic Aorta

Ascending and Descending Thoracic Vertebral Arteries

“…Another anastomotic chain found within the upper costotransverse spaces differs from a descending thoracic VA by its caudal origin from a thoracic ISA and its ascending course. 7 This exceptional variant corresponds to an ascending thoracic VA (Fig 1, left) and should not be confused with variants such as a verte-bral arteria lusoria [8][9][10][11][12][13] or persistent left seventh cervical ISA of aortic origin. 14 This report discusses 9 angiographic observations of descending thoracic VAs and 2 cases of ascending thoracic VAs.…”

Vertebral artery from descending thoracic aorta: rare anatomic variant with diagnostic implication

“…Variations in the VA origin have only been described in case reports that reported their origin from the aortic arch, carotids, thyrocervical trunk, and very rarely from the DTA [1,5]. However, an origin of the right VA distally from the proximal DTA and left VA from the arch after a left SCA origin with normal SCA origins has not been reported so far.…”

“…However, these variations assume great importance when performing interventional or surgical procedures in the management of congenital heart diseases, aortic aneurysms, dissections, cerebral aneurysms, and arteriovenous malformations [2,5]. Preoperative cross-sectional imaging assessment (computed tomography or preferably magnetic resonance angiography) usually provides adequate information about these variations or associations in addition to depiction of the pathology.…”

“…Computed tomography angiography images (A-C) demonstrate the sequence of arch vessels(1)(2)(3)(4)(5) with the retroesophageal (*) right vertebral artery (arrowhead) arising from the descending thoracic aorta (Ao). An anomalous left vertebral artery is also seen arising after left subclavian artery origin separately from the arch (arrow).…”

Persistent hypoglossal artery versus type I proatlantal artery

“…1d may not indicate the hypoplastic vertebral artery but the deep cervical artery. The term ''aberrant right vertebral artery'' means anomalous right vertebral artery arising from the aortic arch distal to the left subclavian artery [1].…”