The 2021 WHO Classification of Tumors of the Central Nervous System: a summary

  • David N Louis
    Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA
  • Arie Perry
    Department of Pathology, University of California San Francisco, San Francisco, California, USA
  • Pieter Wesseling
    Department of Pathology, Amsterdam University Medical Centers/VUmc, Amsterdam, the Netherlands
  • Daniel J Brat
    Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
  • Ian A Cree
    International Agency for Research on Cancer, World Health Organization, Lyon, France
  • Dominique Figarella-Branger
    Service d’Anatomie Pathologique et de Neuropathologie, APHM, CNRS, Institut de Neurophysiopathologie, Hôpital de la Timone, Aix-Marseille University, Marseille, France
  • Cynthia Hawkins
    Department of Paediatric Laboratory Medicine, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
  • H K Ng
    Department of Anatomical and Cellular Pathology, Chinese University of Hong Kong, Hong Kong, China
  • Stefan M Pfister
    Hopp Children’s Cancer Center at the NCT Heidelberg (KiTZ), Division of Pediatric Neurooncology, German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), and Department of Pediatric Oncology, Hematology and Immunology, Heidelberg University Hospital, Heidelberg, Germany
  • Guido Reifenberger
    Institute of Neuropathology, University Hospital Düsseldorf and Medical Faculty, Heinrich Heine University Düsseldorf, and German Cancer Consortium (DKTK) Partner Site Essen/Düsseldorf, Düsseldorf, Germany
  • Riccardo Soffietti
    Department of Neurology and Neuro-Oncology, University of Turin Medical School, Turin, Italy
  • Andreas von Deimling
    Department of Neuropathology, Institute of Pathology, Ruprecht-Karls-University, Heidelberg, Germany
  • David W Ellison
    Department of Pathology, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA

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<jats:title>Abstract</jats:title><jats:p>The fifth edition of the WHO Classification of Tumors of the Central Nervous System (CNS), published in 2021, is the sixth version of the international standard for the classification of brain and spinal cord tumors. Building on the 2016 updated fourth edition and the work of the Consortium to Inform Molecular and Practical Approaches to CNS Tumor Taxonomy, the 2021 fifth edition introduces major changes that advance the role of molecular diagnostics in CNS tumor classification. At the same time, it remains wedded to other established approaches to tumor diagnosis such as histology and immunohistochemistry. In doing so, the fifth edition establishes some different approaches to both CNS tumor nomenclature and grading and it emphasizes the importance of integrated diagnoses and layered reports. New tumor types and subtypes are introduced, some based on novel diagnostic technologies such as DNA methylome profiling. The present review summarizes the major general changes in the 2021 fifth edition classification and the specific changes in each taxonomic category. It is hoped that this summary provides an overview to facilitate more in-depth exploration of the entire fifth edition of the WHO Classification of Tumors of the Central Nervous System.</jats:p>

収録刊行物

  • Neuro-Oncology

    Neuro-Oncology 23 (8), 1231-1251, 2021-06-29

    Oxford University Press (OUP)

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