Aberrant right subclavian artery

Discussion:

An aberrant right subclavian artery arises as the last branch off a left-sided aortic arch and courses obliquely and superiorly behind the trachea and esophagus to resume its normal course. It is typically an isolated anomaly, represents one of the most common aortic arch branching anomalies and affects up to 0.5% of the population, with reported prevalence of 0.4-2%.

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