Inflammatory aneurysm of the superior mesenteric artery
60 year old male patient with acute onset of abdominal pain. Fever and elevated markers of inflammation. Prior cardiac surgery.
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Saccular aneurysm of the SMA with adjacent stranding of the mesenteric fat
Superior mesenteric artery (SMA) aneurysms account for 5.5% of all visceral aneurysms. The SMA is the third most common site.
Inflammatory aneurysms arise from an infection of the arterial wall, usually bacterial. It is a complication of the haematogenous spread of bacterial infection, classically from the heart.