An aberrant right subclavian artery (aSA) arising from the proximal descending aorta is one of the most common anomalies of the aortic arch. We present our experience with an asymptomatic atypical aSA variant found during routine anatomic dissection. This aortic arch variant had two branches, the first being a bicarotid trunk and the second being a common trunk for both subclavian arteries. The right subclavian artery traveled behind the esophagus to reach the right upper extremity, thus forming an incomplete vascular ring around the trachea and the esophagus. The literature has been silent about the existence of this exact aSA variation. A plausible embryologic explanation is provided. An aSA is rarely symptomatic, but when symptoms do occur and intervention is warranted, it is important for surgeons and radiologists alike to be aware of the vascular anomalies that may potentially coexist with this entity. The surgical and endovascular options associated with this unique vascular anomaly are also discussed.
"He summarized that, during early gestation period, the third pair of aortic arches give rise to the left and right common carotid arteries, both vessels originating from embryonic ventral aorta as common vascular trunk, as a result, persistence of this stage of development gives rise to a vascular pattern called the common origin of carotid arteries . Anatomical variations of the origin of the left common carotid artery are more common than of the right common carotid artery, because, the left common carotid artery arises often from the brachiocephalic trunk or from a common stem with the right common carotid. "
[Show abstract][Hide abstract] ABSTRACT: We present a patient with a rare anomaly of the aortic arch. Angiography revealed an aberrant right subclavian artery (aRSA) originating from the middle of the aortic arch. Angiography also demonstrated an anomalous origin of the left common carotid artery sharing a common trunk with the innominate artery and a large right vertebral artery arising from the right common carotid artery. Although this particular combination of anomalies has been reported in cadaver cases, to our knowledge this is the first premortem angiographic description of a patient in which an aRSA originates from the middle of the arch between the anomalous bovine arch trunk and the left subclavian trunk.
Annals of Vascular Surgery 12/2006; 20(6):809-12. DOI:10.1007/s10016-006-9074-3 · 1.17 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: A retro-oesophageal course of the right subclavian artery is referred to as "arteria lusoria". It may be related to severe compression of the trachea and oesophagus, typically resulting in impaired swallowing. The paper presents two patients with arteria lusoria, which in one patient was an aberrant right subclavian artery and in the other an aberrant left subclavian artery, originating from the right-sided aortic arch. In both cases the diagnosis was made with multi-slice computed tomography. The embryology of the anomalies and clinical status of the patients is discussed. Arteria lusoria should be considered in differential diagnosis in patients with dyspnoea and dysphagia. Multi-slice computed tomography allows this anatomical variant to be reliably visualised.
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