Comparison of Functional Recovery Between Laparoscopic and Open Pancreaticoduodenectomy

Inclusion Criteria: * Age: 19 to 80 years * Performance: Eastern Cooperative Oncology Group (ECOG) 0-2 * The preoperative examination showed that the lesion could not be invaded by major blood vessels. * No distant metastasis * Bone marrow function: white blood cell (WBC) at least 3,000 / mm3, Platelet count at least 100,000 / mm3 * Kidney function: Creatinine no greater than 1.5 times upper limit of normal. * Patients who consented to and signed the consent Exclusion Criteria: * Severe obesity (BMI\> 30) * Those with active or uncontrolled infections * Those with severe psychiatric / neurological disorders * Alcohol or other drug addicts * Patients included in other clinical studies that may affect this study * Patients who cannot follow the directions of the researcher * Those with uncontrolled heart disease * Patients with moderate or severe comorbidities who are thought to have an impact on quality of life or nutritional status (cirrhosis, chronic kidney failure, heart failure, etc.) * Pelvic tumor, benign tumor, malignant tumor in other organs * Patients who received prior chemotherapy * In addition to the planned PD patients who require resection of other major abdominal organs (such as gastrectomy, colonic resection and portal / upper mesenteric vascular resection, more than standard PD)