Computed tomographic angiography showing many of the characteristic signs of an aortic graft infection. Here, there is evidence of effacement of the soft tissue planes between the aortic graft and the adjacent duodenum (yellow arrow). Also, there is evidence of soft tissue thickening surrounding the graft (orange arrow). Finally, there is a small focus of ectopic air outside of the duodenum adjacent to the aortic graft (blue arrow). This patient was found to have an aorto-enteric erosion between the fourth portion of the duodenum, and the right limb of the previously placed aortobifemoral bypass graft.