What borders the caudate lobe posteriorly?

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The caudate lobe is tucked on the posterior surface of the liver and lies directly in front of the inferior vena cava. A groove along the liver’s posterior aspect houses the IVC, so the IVC forms the posterior boundary of the caudate lobe. This close relationship explains why the caudate lobe is often described as being between the IVC and the ligamentum venosum (which marks its left border). The hepatic artery and portal vein are components of the portal triad at the porta hepatis, which lies more anteriorly, not forming the posterior border of the caudate lobe.