History of abdominal surgery History of abdominal surgery n Rate% Cholecystectomy 5 4, 5 Conventional common bile duct exploration 18 16, 2 Appendectomy 3 2, 7 Caesarean 11 9, 9 Partial gastrectomy and repair of duodenal ulcer perforation 3 2, 7 Colonectomy 1 0, 9 Total 41 36, 9 Comments: The most common history of biliary tract surgery was 18 open cases and 5 cases of cholecystectomy totaling 20.7%.