Liver & intrahepatic bile ducts


WHO classification

Editor-in-Chief: Debra L. Zynger, M.D.
Raul S. Gonzalez, M.D.

Topic Completed: 10 December 2020

Minor changes: 16 June 2021

Copyright: 2020-2021,, Inc.

PubMed Search: WHO classification[TIAB] liver[TI]

Raul S. Gonzalez, M.D.
Page views in 2020: 339
Page views in 2021 to date: 2,102
Table of Contents
Definition / general | WHO (2019)
Cite this page: Gonzalez RS. WHO classification. website. Accessed December 8th, 2021.
Definition / general
  • WHO classification of tumors of the liver and intrahepatic bile ducts
  • Currently on 5th edition, published in 2019
  • Based on histologic appearance, not molecular characteristics
WHO (2019)
    Benign hepatocellular tumors ICD-O codes
  • Hepatocellular adenoma 8170/0
    • HNF1A inactivated hepatocellular adenoma
    • Inflammatory hepatocellular adenoma
    • B-catenin activated hepatocellular adenoma
    • B-catenin activated inflammatory hepatocellular adenoma

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