Assertion: double aortic arch | /r/HasProperty | aberrant subclavian artery
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text: While the presence of indentations on both sides of the esophagus usually indicates a double aortic arch, an aberrant subclavian artery with a diverticulum of Kommerell can also cause bilateral indentation due to the impression of the aorta on one side and the arterial ligament on the other side ( 1 43 ).