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. 2022 Aug 26;30(4):231–262. doi: 10.4250/jcvi.2022.0058

Figure 14. Schematic figure of a right aortic arch with an ALSA. Black-shaded area represents involuted segments in a hypothetical double arch. This anomaly results from regression of the left arch between the left subclavian artery and left common carotid artery.

Figure 14

ALSA: aberrant left subclavian artery, LCCA: left common carotid artery, RCCA: right common carotid artery, RSA: right subclavian artery.