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Fig. 1. —60-year-old man with end-stage liver disease. Maximum-intensity-projection CT scan obtained in oblique plane reveals accessory right posterior hepatic artery (long solid arrow) arising from superior mesenteric artery and replaced left hepatic artery (dotted arrow) arising from left gastric artery. Common hepatic artery branches into middle hepatic artery that supplies segment IV (short solid arrow) and right anterior hepatic artery.