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World J Gastrointest Surg. May 27, 2013; 5(5): 146-155
Published online May 27, 2013. doi: 10.4240/wjgs.v5.i5.146
Figure 1
Figure 1 Couinaud classification of hepatic segmental anatomy. The liver is made up of 8 segments: Segment 1 is the caudate lobe and is closely related in position to the inferior vena cava posteriorly; Segments 1-4 make up the left hemi-liver; Segments 5-8 make up the right hemi-liver. Couinaud divided the liver into functional left and right hemi-livers, and the plane between the two runs in Cantlie’s line. This line runs from the middle of the gallbladder fossa anteriorly to the IVC posteriorly.
Figure 2
Figure 2 Sectorial anatomy of the liver based on the hepatic veins. The liver is divided into a right and left hemi-liver by the middle hepatic vein (lies in Cantlie’s line). The right hemi-liver is divided into anterior and posterior sections by the course of the right hepatic vein; The left hemi-liver is divided into lateral and medial sections by the left hepatic vein.