Left-sided Inferior Vena Cava and Aortoiliac Surgery

Case no. 1: (A) The infrarenal left-sided IVC is showed in the CT (arrow), note the abdominal aortic aneurysm (sloping arrow). (B) The left-sided IVC (arrow), and the aortoiliac aneurysm (sloping arrows) are also showed in the angioCT.

Case no. 2: (A) Angiography: left iliac artery occlusion and right aorta displacement (arrow). (B) Surgery field: proximal aortobifemoral anastomosis and left-sided IVC crossing anterior the aorta. (C) Embryologic origin: 1, hepatic cava (hepatic sinusoids and vitelline vein); 2, suprarenal cava (right subcardinal vein); 3, renal cava (intersubcardinal and suprasubcardinal anastomosis); 4, left renal vein (ventral limb of renal collar); 5, infrarenal cava (left supracardinal vein instead of the right one); 6, iliac veins (postcardinal veins).