Abdomen, Pelvis & Perineum
According to Couinaud’s classification the 4th segment of the liver is (AIIMS –Nov’2009)
Pg. 295; Keith L Moore (5th Ed.)
• Caudate (comma shaped) lobe is the beginning of the segmental nomenclature as is taken as segment - I (posterior segment).
• Quadrate lobe is considered under left medial segment and is numbered segment -IV.