Assertion: aberrant subclavian artery | /r/HasProperty | embryologic anomaly
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text: An aberrant subclavian artery, also known as the arteria lusoria, is an embryologic anomaly that occurs when the fourth right aortic arch and distal aorta involute and the seventh right inner segmental artery remains, resulting in a subclavian artery arising from the descending thoracic aorta distal to the left subclavian artery (LSA).1