Right medial lobe of liver

The right medial lobe of liver is the portion that extends caudally beyond the ventral portion of the costal arch. Its diaphragmatic surface is in the form of a curved triangle. The right half of the fossa of the gallbladder is located on its medial face opposite to the comparable excavation on the quadrate lobe. The right medial lobe of liver is partially fused to the medially lying quadrate lobe on its dorsal portion and in some species near the fossa of the gallbladder, leaving only a short fissure extending dorsally form the fossa to separate the two lobes.