A retroesophageal right subclavian artery with the right vertebral artery originating from the right common carotid artery

Abstract

The right subclavian artery was found to be retroesophageal, and the right vertebral artery originated from the right common carotid artery in a 46-yearold female cadaver. The right subclavian artery stemmed from the upper portion of the thoracic aorta, posterior and inferior to the origin of the normal left subclavian artery. The right and left common carotid arteries originated from the aortic arch in close proximity. Compression of the trachea anteriorly could not be demonstrated. The right inferior laryngeal nerve was nonrecurrent. A brief review of the literature shows the importance of knowledge concerning the aberrant right subclavian artery for the roentgenologist and the surgeon in the treatment of patients with this vascular anomaly.

Anomalous Origins of Bilateral Vertebral Arteries in a Child with down Syndrome and Moyamoya Disease

“…Also they may have duplicate origins, generally from the aortic arch and subclavian artery and this is usually seen on the left 7 . The left VA (lVA) arises from the aortic arch with a reported origin of the VA from the ICA or ECA; if it occurs in the lower (third through sixth) CIAs, the result is an abnormal origin of the VA from the CCA or aortic arch respectively 4,5 . Based on embryogenesis, two variants of a common origin of CCA-VA have been described 4,6 .…”

“…The left VA (lVA) arises from the aortic arch with a reported origin of the VA from the ICA or ECA; if it occurs in the lower (third through sixth) CIAs, the result is an abnormal origin of the VA from the CCA or aortic arch respectively 4,5 . Based on embryogenesis, two variants of a common origin of CCA-VA have been described 4,6 . The first (type I) includes a persistent lower CIA and an involution of the ipsilateral middle dorsal aorta between the persistent CIA and the seventh CIA.…”

“…These developmental processes result in a normal origin of the VA from the SCA. Failure of involution in one of the first six CIAs (i.e., a persistent CIA) causes a variety of abnormal origins of the VA 4,5 . If the persistent CIA occurs in the upper (first or second) intersegmental arteries, the result is an abnormal teries is also of importance for patients who have to undergo four-vessel angiography in an emergency to rule out, for example, the possibility of intracranial aneurysm after subarachnoid hemorrhage.…”

“…Although the right VA is classically described to arise as the first branch of the ipsilateral subclavian artery (SCA), multiple variations in the origin of the VA have been reported in the literature. The VA can arise from the aortic arch; from the CCA, ICA or from subclavian branches, such as the thyrocervical trunk [1][2][3][4][5][6] . Also they may have duplicate origins, generally from the aortic arch and subclavian artery and this is usually seen on the left 7 .…”

Anomalous Origin of the Right Vertebral Artery from the Ascending Aorta in the Presence of an Aberrant Right Subclavian Artery

“…Some case reports of anomalous origin of the right VA in the presence of aberrant right RSCA were published. In these cases, right VA originated from the right common carotid artery or the aberrant RSCA [6,7]. We demonstrate for the first time that in such cases, the right VA can also originate from the ascending aorta.…”