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Aortic arch uncrossing using a tracheal resection procedure.
Multimedia Manual of Cardiothoracic Surgery : MMCTS 2021 June 23
One category of vascular rings is the right aortic arch associated with the diverticulum of Kommerell from which the left subclavian artery usually originates. In some cases, the right aortic arch crosses behind the trachea and the esophagus from right to left. The trachea and esophagus are compressed by the right aortic arch, the left ligamentum, and the posterior crossing aorta, which causes the typical symptoms of noisy breathing, dyspnea on exertion, dysphagia, and frequent upper respiratory tract infections. Division of the atretic arch segment between the diverticulum of Kommerell and the left common carotid artery may relieve the symptoms temporarily but does not relieve the compression produced by this vascular abnormality. Indeed, at the age of 10 months, this patient underwent anterior arch division and posterior aortopexy via a posterolateral thoracotomy in order to relieve the compression caused by the vascular ring. Several months after the initial operation, the patient had recurrent respiratory symptoms as a result of residual vascular compression from the circumflex arch. A CT scan and airway endoscopy confirmed tracheal compression; in addition, the tracheoscopy showed tracheomalacic changes in the compressed segment of the trachea. To relieve the symptoms and the compression, we decided to resect the tracheomalacic segment of the trachea and translocate the aortic arch anterior to the trachea and esophagus.
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