Mycotic aortic aneurysm

Case contributed by Henry Knipe

Presentation

Abdominal pain

Patient Data

Age: 75 years
Gender: Male
ct

Irregular, lobulated saccular aneurysm arising from the right lateral aspect of the thoraco-abdominal aorta surrounded by a walled-off, peripherally enhancing fluid collection. The aneurysm and collection occur at the level of the aortic hiatus with thickening of the right diaphragmatic crus. 

Case Discussion

This is a presumed mycotic aneurysm, which developed after a gram-negative sepsis secondary to pyelonephritis. 

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