{"entity":{"id":"paper-who-2022-lymphoid-alaggio-leukemia-2022","kind":"paper","name":"WHO classification of haematolymphoid tumours, fifth edition: lymphoid neoplasms","aka":[],"tldr":"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.","asOf":"2026-09-17","links":[{"label":"Leukemia 2022","url":"https://doi.org/10.1038/s41375-022-01620-2"},{"label":"PubMed","url":"https://pubmed.ncbi.nlm.nih.gov/35732829/"}],"tags":[],"related":[],"cancers":["richter-transformation-cll","primary-mediastinal-b-cell-lymphoma","marginal-zone-lymphoma","cutaneous-t-cell-lymphoma"],"sections":[],"technologies":[],"targets":[],"drugs":[],"companies":[],"institutions":[],"pathways":[],"terms":[],"trials":[],"people":[],"bottlenecks":[],"keyPapers":[],"journals":["leukemia"],"dependsOn":[],"notes":[],"journal":"Leukemia","year":2022,"doi":"10.1038/s41375-022-01620-2","pmid":"35732829","authors":"Alaggio R, Amador C, Anagnostopoulos I, et al.","paperType":"guideline","findings":[],"whatItMeans":"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."],"changedPractice":true},"route":"/key-papers/paper-who-2022-lymphoid-alaggio-leukemia-2022/","neighbours":{"cancer":[{"id":"cutaneous-t-cell-lymphoma","kind":"cancer","name":"Cutaneous T-cell lymphoma (mycosis fungoides and Sezary syndrome)","route":"/cancers/cutaneous-t-cell-lymphoma/"},{"id":"marginal-zone-lymphoma","kind":"cancer","name":"Marginal zone lymphoma","route":"/cancers/marginal-zone-lymphoma/"},{"id":"primary-mediastinal-b-cell-lymphoma","kind":"cancer","name":"Primary mediastinal (thymic) large B-cell lymphoma","route":"/cancers/primary-mediastinal-b-cell-lymphoma/"},{"id":"richter-transformation-cll","kind":"cancer","name":"Richter transformation of chronic lymphocytic leukaemia","route":"/cancers/richter-transformation-cll/"}],"journal":[{"id":"leukemia","kind":"journal","name":"Leukemia","route":"/journals/leukemia/"}]}}