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Figure 5: Normal left arch develops after complete regression of the distal portion of the right arch in embryologic double aortic arch (shaded segment). R: Right, L: Left, CCA: Common carotid artery, SA: Subclavian artery, PA: Pulmonary artery, Ao: Aorta, Tr: Trachea, Os: Oesophagus (modifi ed from Shuford, et al.[10]) |
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