# WHO classification of haematolymphoid tumours, fifth edition: lymphoid neoplasms

Source: https://onco.cc/key-papers/paper-who-2022-lymphoid-alaggio-leukemia-2022/  
OnCo record `paper-who-2022-lymphoid-alaggio-leukemia-2022` (Key paper). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

The 2022 World Health Organization classification of lymphomas and lymphoid leukaemias, the reference for how these diseases are named, defined and separated.

## Summary

Summary of the fifth-edition WHO classification of lymphoid neoplasms, reorganising B-cell and T-cell lymphomas, plasma cell neoplasms and lymphoid leukaemias with updated entities, new genetically defined subtypes and revised terminology.

## Fields

- Kind: Key paper
- Last checked: 2026-09-17
- Journal: Leukemia
- Year: 2022
- DOI: 10.1038/s41375-022-01620-2
- Authors: Alaggio R, Amador C, Anagnostopoulos I, et al.
- What it means: Every lymphoma diagnosis on this site refers to an entity in this classification or the parallel International Consensus Classification.
- Caveats: Coexists with the 2022 International Consensus Classification, which differs in some entity names.

## Sources

- Leukemia 2022: https://doi.org/10.1038/s41375-022-01620-2
- PubMed: https://pubmed.ncbi.nlm.nih.gov/35732829/

## Connected records

- cancers: [Cutaneous T-cell lymphoma (mycosis fungoides and Sezary syndrome)](https://onco.cc/cancers/cutaneous-t-cell-lymphoma/), [Marginal zone lymphoma](https://onco.cc/cancers/marginal-zone-lymphoma/), [Primary mediastinal (thymic) large B-cell lymphoma](https://onco.cc/cancers/primary-mediastinal-b-cell-lymphoma/), [Richter transformation of chronic lymphocytic leukaemia](https://onco.cc/cancers/richter-transformation-cll/)
- journals: [Leukemia](https://onco.cc/journals/leukemia/)

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