Radiological features of uncommon aneurysms of the cardiovascular system

Figure 11 Fistula. A: Aortoesophageal fistula-axial computed tomography (CT) scan shows multiple gas locules in the ascending aorta (arrows) consistent with aortoesophageal fistula; B: Coronal contrast enhanced CT shows a large abdominal aortic aneurysm (white arrow) near the level of the bifurcation communicating with the inferior vena cava (red arrow), which is isoattenuating to the aorta; C: Three-dimensional volume rendered CT shows abdominal aortic aneurysm (white arrow) with fistulous connection to the inferior vena cava (red arrow).