RADIOLOGY: AORTA: Case# 33572: RUPTURING AORTIC ANEURYSM. 71 year old male. 1. Impending abdominal aorta aneurysm rupture. The crescent of high attenuation materaial is believed to be contrast materaial extravasating from the aortic graft. No definite aneurysmal leak is present at this stage though. 2. Small atrophic left kidney.