CTICasesAortic diverticulum
Imaging findings
Chest CT shows an incidental diverticulum arising from the descending thoracic aorta giving rise to a small intercostal artery, in the absence of an aberrant subclavian or vertebral artery.
Key takeaways
A thoracic aortic diverticulum is a developmental anomaly that can occur incidentally without associated aberrant branching vessels. It represents a normal vascular variant that should not be mistaken for an acquired aneurysm or dissection.
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