Anus & perianal area


WHO classification

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

Last author update: 10 December 2020
Last staff update: 16 June 2021

Copyright: 2020-2023,, Inc.

PubMed Search: WHO classification anus[TIAB]

Raul S. Gonzalez, M.D.
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Table of Contents
Definition / general | WHO (2019)
Cite this page: Gonzalez RS. WHO classification. website. Accessed September 28th, 2023.
Definition / general
  • WHO classification of tumors of the anal canal
  • Currently on 5th edition, published in 2019
  • Based on histologic appearance, not molecular characteristics
WHO (2019)

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