Mesenteric Approach vs. Conventional Approach for Pancreatic Cancer

Inclusion Criteria: 1. Patient who are scheduled to undergo pancreaticoduodenectomy for resectable or borderline resectable (only portal vein invasion) pancreatic ductal adenocarcinoma. 2. Patients whose Eastern Cooperative Oncology Group performance status are 0 or 1. 3. Patients who are 20 years or older. 4. Patients who have adequate organ function. 5. Patients who understand sufficiently the study to provide written informed consent Exclusion Criteria: 1. Patients who have severe ischemic cardiovascular disease 2. Patients who have liver cirrhosis or active hepatitis 3. Patients who need oxygen due to interstitial pneumonia or lung fibrosis 4. Patients who receive dialysis due to chronic renal failure 5. Patients who need surrounding organ resection 6. Patients who need artery reconstruction 7. Patients who are diagnosed as positive para-aortic lymph node metastases based on preoperative imaging 8. Patients who have active multiple cancer that is thought to influence the occurrence of adverse events 9. Patients who take steroid for the long period that is thought to influence the occurrence of adverse events 10. Patients who undergo laparoscopic or laparoscopy-assisted pancreaticoduodenectomy 11. Patients who cannot understand ths study due to psychotic disease or psychological symptoms 12. Patients whose preoperative biopsy tissues are diagnosed as other pathological findings than pancreatic ductal adenocarcinoma 13. Patients who underwent gastrectomy or colon/ rectum resection previously 14. Patients who have severe drug allergy to iodine and gadolinium