Introduction : Hepatic arteial anomalies that are pertinent to pancreatectomy occurs in 26% of patients. Aberrant right hepatic artery from superior mesenteric artery occur as many as 25% of subjects in pancreas surgery and aberrant left hepatic artery may rarely arise from superior maesnteric artery and more frequently arise from left gastric artery(14% of suject). Both may be injured during the dissection of pancreas head and partial gastrctomy which go with whipple operation The most endangerd arteries are hepatic artery and its branch of superior mesenteric artery.

Methods : We had performed radical subtotal gastrectomy and BII anastomosis in gastric cancer with aberrant left hepatic artery. Aberrant hepatic arteery arised from left gastric artery and was about 5 mm diameter During operation, We ligated abberant left hepatic artery near liver surface and then left liver showed cyanotic color change. due to ischemic damage. The liver function test had perfprmed and elevated for 1 weak and normalized after then. The patient had suffered from liver damage due to ligation of large diameter aberrant left hepatic artery.

Results : Tthe most common crinical situations in which inadvertent ligation of aberrant hepatic artery cause problems are (1)during cholecystectomy when aberrant hepatic arteries are mistaken as a cystic artery (2) liver transplantation (3)iatrogenic.

Conclusions : The common clinical situtions in which aberrant hepatic artery cause problems are more commonly in laparoscopic surgery than traditional open cholecystectomy. We can perfprm the anastomosis of aberrant hepatic artery to adjacent artery and aorta possibly and show the anastomosis technique of aberrant hepatic artery at first.