Overview Cyclooxygenase-2 Inhibitor for Adjuvant Anticancer Effect in Patients With Biliary-pancreas Cancer Status: Unknown status Trial end date: 2017-06-01 Target enrollment: Participant gender: Summary In extrahepatic bile duct cancer and pancreatic cancer, we will treat postoperatively with COX2 inhibitor and assess survival rate and recurrent rate. Phase: Phase 4 Details Lead Sponsor: Seoul National University HospitalCollaborator: Seoul National University Bundang HospitalTreatments: CelecoxibCyclooxygenase 2 InhibitorsPancreatinPancrelipase