CTICasesMycotic Pseudoaneurysm of the Aorta
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Imaging findings
Chest radiograph reveals a retrocardiac opacity. Comparison with a prior study shows disappearance of atherosclerotic calcification previously present in the aorta. CT confirms a large, broad-based pseudoaneurysm of the aorta with surrounding inflammatory stranding, correlating with the retrocardiac opacity.
Key takeaways
A retrocardiac opacity on chest radiograph, especially without an air-fluid level, should prompt consideration of a pseudoaneurysm, particularly when previous studies show changes in aortic calcification. Mycotic pseudoaneurysms can be challenging to confirm microbiologically.
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