number and size of gallstones in the gallbladder and common bile duct , presence of pancreatic duct reflux , diameter of the cystic duct , and size of the duodenal orifice and ampulla of vater were all studied in 75 patients with gallstone pancreatitis ( group i ) , 75 patients with cholelithiasis ( group ii ) , and by dissections in 50 autopsy specimens .
C0016976
gallbladder
C0008350
cholelithiasis