Cholangiocarcinoma: three different entities based on location

Division of Surgical Oncology, Department of Surgery, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, OH, USA Correspondence to: Aslam Ejaz, MD, MPH. Assistant Professor of Surgery, Division of Surgical Oncology, Department of Surgery, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, 320 W. 10th Ave., M-260 Starling-Loving Hall, Columbus, OH, USA. Email: aslam.ejaz@osumc.edu. Provenance: This is an invited article commissioned by the Editorial Office, Annals of Translational Medicine. Comment on: Hang H, Jeong S, Sha M, et al. Cholangiocarcinoma: anatomical location-dependent clinical, prognostic, and genetic disparities. Ann Transl Med 2019;7:744.

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