Bi-caval anastomosis.

In contrast to the bi-atrial anastomosis, thhis image illusttrates an example of a bi-caval anastomosis. The Highlighted area shows the anastomosis of the superior vena cava. The inset shows that atual anastomotic site. The anastomosis of the inferior vena cava is not visible, as it lies dorsal and caudal to the posterior leaflet of the tricuspid valve.