CTICasesSalmonella mycotic pseudoaneurysm
Imaging findings
CT angiography shows a rapidly expanding, irregular, lobulated outpouching (pseudoaneurysm) arising from the descending thoracic aorta with surrounding inflammatory changes, in a patient with Salmonella bacteremia.
Key takeaways
Salmonella bacteremia has a high propensity for infecting atherosclerotic plaques, leading to rapid development of a mycotic pseudoaneurysm. On imaging, it classically presents as an irregular, rapidly enlarging mushroom-like outpouching (mycotic shape) with extensive peri-aortic inflammation.
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