A prospective randomized trial of Billroth-I versus Billroth-II reconstruction after pancreaticoduodenectomy with pancreaticogastrostomy reconstruction

INTERVENTION: Perform Billroth I reconstruction after pancreaticoduodenectomy. Perform Billroth II reconstruction after pancreaticoduodenectomy. CONDITION: pancreatic tumor, bile duct tumor, ampullary tumor, duodenal tumor PRIMARY OUTCOME: Incidence of DGE and postoperative hospital stay in the postoeprative early period. SECONDARY OUTCOME: Evaluation of nutriture, digestive ability, and pancreatic endocrine/exocrine secretory function in the postoperative late period. INCLUSION CRITERIA: Cases with pancreatic tumor, bile duct tumor, ampullary tumor, or duodenal tumor who received macroscopic curative resection by pancreticoduodenectomy. Performance status 0 or 1.