Table 1.

Hepatic anatomy according to the classifications of Michels⁵ and Hiatt et al.³

Michels	Anatomy	Hiatt et al.
I	Normal (RHA and LHA arise from the proper hepatic artery)	I
II	Replaced LHA from the LGA	II
III	Replaced RHA from the SMA	III
IV	Replaced LHA from LGA and replaced RHA from SMA	IV (Combination of accessory and/or replaced LHA and RHA)
V	Accessory LHA from LGA	II
VI	Accessory RHA from the SMA	III
VII	Accessory LHA and accessory RHA	IV
VIII	Replaced RHA and accessory LHA or Replaced LHA and accessory RHA	IV
IX	Replaced CHA from SMA	V
X	Replaced CHA from the LGA
	Replaced CHA from the aorta	VI

LGA, left gastric artery; LHA, left hepatic artery; RHA, right hepatic artery; SMA, superior mesenteric artery.