Unusual fistulas and connections in the cardiovascular system: A pictorial review

Figure 13 Aorta to inferior vena cava fistula. A: Axial contrast computed tomography (CT) of the abdomen in a patient with history of abdominal aortic aneurysm (AO) shows similar contrast opacification of the inferior vena cava (IVC). There is a communication demonstrated (arrow) between the aorta and IVC; B: Coronal contrast CT of the abdomen demonstrates the site of fistulous communication between the aorta and the distal IVC adjacent to the right common iliac vein; C: Volume rendered 3D computed tomography angiography shows fistulous communication (arrow) between the abdominal aorta and IVC.