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The failure of embryonic vascular arches to fuse and regress in the usual manner during the formation of the aortic arch, pulmonary arteries and ductus arteriosus can cause a wide spectrum of vascular congenital abnormalities of the aortic arch and its branches. These abnormal vascular structures may cause variable compression of the trachea and/or oesophagus with symptoms ranging from none to severe...
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