A rare case of origin of cystic artery arising from inferior pancreato-duodenal artery

Typically cystic artery arises from the right hepatic artery to the right of hepatic duct in the Calot’s triangle bounded infero-laterally by cystic duct, medially by hepatic duct and superiorly by inferior surface of liver. On reaching the gall bladder it usually divides in to superficial and deep branch. The superficial branch is distributes to the free peritoneal surface of the gall bladder, the deep branch passes behind the gall bladder to became distributed to its attached non-peritoneal surface and to the gall bladder bed.