(right) posterior medial hepatic segment [VIII]
of the four segments comprising the right (part of) liver (i.e., that lie to the right side of the plane of the middle hepatic vein), the one that lies between that plane and the plane of the right hepatic vein and superior to the plane of the transverse portion of the right branch of the hepatic portal vein; it is supplied by the medial posterior branch of the portal vein.
Synonym(s): segmentum hepatis posterius mediale (dextrum) [VIII]TA
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Examples: glitazone, GI cocktail, etc.