Left Inferior Vena Cava and Right Retroaortic Renal Vein

Figure 2

(a) Left IVC (black arrow) crosses the middle line behind the aorta (star). (b) Infrahepatic IVC drains into the Azygos vein (black straight arrow) that enters the thorax together with the aorta (star). Suprahepatic IVC (black curved arrow) is formed only from the hepatic veins and drains as usual into the right atrium. (c) Right renal vein (white arrowhead) crosses the middle line behind the aorta (star) to join the left IVC (black arrow). (d) Infrarenal IVC (black arrow) on the left side of the aorta (star). Large ovarian veins (white arrows) on both sides. Proximally duplicated left ureter (black arrowhead).

(a)

(b)

(c)

(d)