Fig. 26
From: The inferior vena cava: anatomical variants and acquired pathologies
Aortocaval fistula complicating abdominal aortic aneursym. a Axial and b coronal contrast-enhanced CT images of a fistula (asterisk) between the IVC (arrowhead) and an abdominal aortic aneurysm (arrow), with similar contrast opacification of the aneurysm sac and the IVC in the arterial phase. The abdominal aortic aneurysm contains a combination of contrast opacification and non-enhancing thrombus