“…Aortocaval (ACF) or iliocaval (ICF) arteriovenous fistula can be caused by erosion by an enlarged or aneurysmal atherosclerotic aorta, low-velocity trauma, connective tissue disorders, and iatrogenic injury during lumbar disc surgery. [1][2][3][4] They are rare, lifethreatening complications that occur in <1% of abdominal aortoiliac artery aneurysms (AIAAs) and in 3-7% of cases of AIAA rupture. 1,5,6 Classic symptoms such as abdominal and/or back pain, a pulsatile mass and an abdominal machinery bruit, present in only 40% of cases.…”