Relation of caudate lobe of liver is -
Caudate lobe lies anterior to crura of diaphragm, right inferior phrenic artery and coeliac trunk.
Caudate lobe is superior to portal vein (lies in porta hepatis) and to right of ligament venosum.
Posterior to portal vein
Anterior to right inferior phrenic artery
Posterior to ligamentum teres
Posterior to ligamentum venosum