Figure legend
(A ) Preoperative computed tomography (CT) image showing compression of the left renal vein (LRV, arrowhead) between the dilated abdominal aorta (AO) and superior mesenteric artery (SMA). (B ) Abrupt triangular narrowing of the LRV (beak sign). (C ) Postoperative CT image showing distance between the prosthetic graft (PG) and SMA, as well as the release of compression affecting the LRV. (D, E ) Pre- and postoperative three-dimensional CT images showing enlargement of the angle between the SMA and aorta/PG.