Figure 2. Accessory renal arteries and superior mesenteric artery aneurysm.

CT angiograms of the abdomen and pelvis showing (A) the dominant left renal artery (purple arrowhead) arising at the level of the L2 vertebrae, an accessory left renal artery (yellow arrowhead) arising more inferiorly from the descending aorta at the level of L3-L4, and (B) a 1.4-cm aneurysm of the proximal superior mesenteric artery (green arrowhead).