CTICasesAberrant Right Subclavian Artery
Imaging findings
Chest radiographs show subtle buckling of the posterior tracheal wall and retrotracheal fullness. CT confirms an aberrant right subclavian artery (arteria lusoria) coursing posterior to the trachea and esophagus, causing mild tracheal indentation.
Key takeaways
An aberrant right subclavian artery is a common aortic arch anomaly. It courses retroesophageally and retrotracheally, occasionally causing dysphagia (dysphagia lusoria) or a subtle mass effect in the retrotracheal space.
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