CTICasesCommon origin of the subclavian arteries simulating a paratracheal mass
Imaging findings
Chest radiograph shows a right paratracheal opacity and fullness in the superior mediastinum above the aortic arch. Non-contrast CT demonstrates a rare congenital vascular anomaly consisting of a common origin/trunk of the right aberrant subclavian and left subclavian arteries, showing severe tortuosity and calcification.
Key takeaways
Anomalous or aberrant arch vessels can become ectatic and tortuous in older adults, simulating mediastinal, paratracheal, or apical chest masses on radiographs. CT or CTA is diagnostic and prevents unnecessary biopsy.
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