Abstract
We underwent open cholecystectomy for an adult patient with gall bladder stone complicated with preduodenal portal vein (PDPV). Splenic vein was merged with inferior mesenteric vein in the left side of abdominal cavity, then merged with superior mesenteric vein and became portal vein, ran towards right side of abdominal cavity and elongated to S-shape at ventral side of 2nd and 3rd portion of duodenum, then ran at ventral side of common bile duct and proper hepatic artery within the hepatoduodenal ligament. This case was not exactly the same as previously reported, so-called PDPV, in which portal vein runs at ventral side of 1st portion of duodenum and causes stenosis of duodenum. But considered in terms of abnormality of embryological development, this case was considered to be caused by the same abnormality of development as so-called PDPV.
