CTICasesRuptured Atherosclerotic Aortic Plaque
Imaging findings
Chest radiographs show a rapidly enlarging soft tissue interface/bump along the left aspect of the aortic arch. CT angiogram confirms a focal rupture of an atherosclerotic plaque with localized mediastinal hematoma/pseudoaneurysm.
Key takeaways
Rupture of a pre-existing atherosclerotic plaque can lead to pseudoaneurysm formation or localized aortic hematoma, which can be detected on serial radiographs by the sudden change in aortic contour.
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