Anomalies of the aortic arch include various variations. Aberrant right subclavian artery (ARSA) is one of the most common variations in this region, with an incidence of approximately 1% of all population. For this reason, ARSA is accidentally encountered during clinical settings. In 2019, we encountered a case of ARSA during a human cadaver dissection course for medical students at Teikyo University. This cadaver did not have a Kommerell’s diverticulum, which is often accompanied in ARSA. While the present case is a vascular anomaly, it has a clinical relevance because of its topographical nature juxtaposed to the trachea and esophagus.
Aberrant right subclavian artery: its clinical importance in thoracic surgery
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