Table 2. Number of cases and percentages of hepatic artery variants (n=550).

* Replaced left hepatic artery with accessory right hepatic artery.

† Replaced left hepatic artery associated with CHA that arises from the superior mesenteric artery.

‡ Accessory left hepatic associated with CHA that arises from the superior mesenteric artery.

NOC: Not otherwise classified (in Michele’s classification system)

CHA: common hepatic artery, AA: abdominal aorta

Hepatic artery classification (Michel’s types)	Number of cases	Percentage
Type I	359	65.3
Type II	44	8.0
Type III	46	8.4
Type IV	15	2.7
Type V	38	6.9
Type VI	11	2.0
Type VII	5	0.9
Type VIII	4	0.7
Type IX	19	3.5
Type X	0	0
Type II with accessory right hepatic artery arising from the celiac trunk (NOC)	1	0.2
Coexistence of Type II and VI (NOC)	2	0.4
Replaced right hepatic artery arises directly from AA; see Figure 3 (NOC)	3	0.5
Coexistence of Type IX and Type II † (NOC)	1	0.2
Coexistence of Type IX and Type V ‡ (NOC)	1	0.2
Accessory right hepatic artery arises directly from the celiac trunk (NOC)	1	0.2