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Stranding and wall thickening involving a 5 cm length of the distal abdominal aorta at the bifurcation. This extends to involve approximately 2 cm of the proximal aspects of both common iliac arteries. The finding is in keeping with aortitis.

There are lobulated saccular aneurysms arising from the aortitis. 

There is an associated peri-aortic collection with gas extending anterior and inferior to the aorta.