The non contrast phase demonstrates a bilobed suprarenal AAA extending to the bifurcation with some subtle peripheral hyperdensity in the lower lobe forming a crescent concerning for intramural haematoma. There is some mild left retroperitoneal stranding.
The CTA demonstrates eccentrically thickened aortic wall in the lower lobe of the aneurysm. No focal contrast blush is seen outside the aorta. The kidneys appear well perfused.