title: Current Status on Cholangiocarcinoma and Gallbladder Cancer.
abstract: BACKGROUND
  Cholangiocarcinomas (CC) as well as gallbladder cancers are relatively rare and intractable diseases. Clinical, pathological, and epidemiological studies on these tumors have been under investigation. The current status and/or topics on biliary tract cancers have been reported in the East West Association of Liver Tumor (EWALT), held in Milano, Italy in 2015.
  
  
  CONCLUSIONS
  All the authors, herein, specifcally reported the current status and leading-edge findings on biliary tract cancers as the following sequence: epidemiology of CC, surgical therapy for intrahepatic CC, surgical therapy for perihilar CC, surgical therapy for gallblad der cancer, chemotherapy for biliary tract cancers, and new histological features in CC.
  
  
  CONCLUSIONS
  The present review article will update the knowledge on biliary tract cancers, en hancing the quality of daily clinical practice. However, many features about these cancers remain unknown; further studies are required to establish disease-specific optimal treatment strategies.
authors.affiliation: Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan.
authors.forename: Tomoki
authors.initials: T
authors.lastname: Ebata
authors.affiliation: Department of Medical and Surgical Sciences, Hospital Sant'orsola-Malpighi, University of Bologna, Bologna, Italy.
authors.forename: Giorgio
authors.initials: G
authors.lastname: Ercolani
authors.affiliation: Division of Gastroenterology, Department of Medico-Surgical Sciences and Biotechnologies, University Sapienza of Rome, Rome, Italy.
authors.forename: Domenico
authors.initials: D
authors.lastname: Alvaro
authors.affiliation: Department of Hepatobiliary and Pancreatic Surgery, European Institute of Oncology, Milan, Italy.
authors.forename: Dario
authors.initials: D
authors.lastname: Ribero
authors.affiliation: Pathology Unit, Humanitas Clinical and Research Center, Milan, Italy.
authors.forename: Luca
authors.initials: L
authors.lastname: Di Tommaso
authors.affiliation: Institute of Cancer Sciences, University of Manchester and Department of Medical Oncology, The Christie, Manchester, United Kingdom.
authors.forename: Juan W
authors.initials: JW
authors.lastname: Valle
keywords: Biliary tract cancer; Cholangiocarcinoma; Gallbladder cancer