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| aberrant subclavian artery ： ウィキペディア英語版 |
aberrant subclavian artery
Aberrant subclavian artery, or aberrant subclavian artery syndrome, is a rare anatomical variant of the origin of the right or left subclavian artery. This abnormality is the most common congenital vascular anomaly of the aortic arch.
==Presentation==
The aberrant artery usually arises just distal to the left subclavian artery and crosses in the posterior part of the mediastinum usually behind the oesophagus on its way to the right upper extremity. Such course of this aberrant vessel may cause a vascular ring around the trachea and oesophagus.
Dysphagia due to an aberrant right subclavian artery is termed dysphagia lusoria. Palsy of the recurrent laryngeal nerve is termed Ortner's syndrome.
The aberrant right subclavian artery frequently arises from a dilated segment of the proximal descending aorta, the so-called Diverticulum of Kommerell. It is alternatively known as lusorian artery.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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