No significant differences were noted between the PBD and control groups in baseline clinical characteristics, including sex, age, BMI, ASA classification, preoperative CA199 level, preoperative aspartate aminotransferase (AST), preoperative alanine aminotransferase (ALT), preoperative prothrombin time (PT), history of upper abdominal surgery, surgical approach, surgical duration, intraoperative blood loss, pancreaticojejunal anastomosis, pathologic type, and tumor grade (all p > 0.05). Here, GPT is linked to neoplasm.