Which segment corresponds to the caudate lobe?

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In liver segmentation, eight segments are defined by the pattern of portal inflow and hepatic venous outflow. The caudate lobe is a distinct unit because it sits on the posterior surface between the IVC and the fissure for the ligamentum venosum and has its own venous drainage directly into the IVC. In this scheme, the caudate lobe is designated as Segment I. So the segment that corresponds to the caudate lobe is Segment I.