CTICasesStanford Type A aortic dissection originating from penetrating ulcer
Imaging findings
Serial CT angiograms show a Stanford Type B dissection with arch involvement that resolves, followed by the development of a large penetrating aortic ulcer / pseudoaneurysm at the arch, which subsequently progresses to a Stanford Type A dissection.
Key takeaways
A penetrating atherosclerotic ulcer of the aortic arch is a high-risk lesion that can progress to a pseudoaneurysm and eventually trigger a retro- or antegrade Type A dissection, requiring prompt surgical or endovascular repair.
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