Department of Surgery Division of Hepato-Biliary-Pancreatic SurgeryKobe University Graduate School of Medicine Kobe Hyogo 650-0017 Japan;
Department of Surgery Division of Hepato-Biliary-Pancreatic SurgeryKobe University Graduate School of Medicine Kobe Hyogo 650-0017 Japan;
Department of Surgery Division of Hepato-Biliary-Pancreatic SurgeryKobe University Graduate School of Medicine Kobe Hyogo 650-0017 Japan;
Department of Surgery Division of Hepato-Biliary-Pancreatic SurgeryKobe University Graduate School of Medicine Kobe Hyogo 650-0017 Japan;
Department of Surgery Division of Hepato-Biliary-Pancreatic SurgeryKobe University Graduate School of Medicine Kobe Hyogo 650-0017 Japan;
Department of Surgery Division of Hepato-Biliary-Pancreatic SurgeryKobe University Graduate School of Medicine Kobe Hyogo 650-0017 Japan;
Department of Surgery Division of Hepato-Biliary-Pancreatic SurgeryKobe University Graduate School of Medicine Kobe Hyogo 650-0017 Japan;
Department of Surgery Division of Hepato-Biliary-Pancreatic SurgeryKobe University Graduate School of Medicine Kobe Hyogo 650-0017 Japan;
Biliary tract cancer; Staging laparoscopy; Neutrophil-lymphocyte ratio; Modified Glasgow prognostic score; Carbohydrate antigen 19-9; Carcinoembryonic antigen;