Aberrant right subclavian artery
Work up for cough and breath shortness.
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The right subclavian artery is arising from the arch of aorta directly posterior to the esophagus.
Mild degenerative changes as osteophytosis are seen at the thoracic spine.
Features on CT scan are consistent with aberrant right subclavian artery (ARSA) that is the most common aortic arch anomaly.