[Pathology of malignant lymphomas--clarity instead of confusion]

Esther Mueller-Garamvölgyi1, Aurel Perren, Anja Schmitt

  • 1Institut für Pathologie, Universität Bern, Bern. esther.mueller@pathology.unibe.ch

Insights

The WHO classification provides clear lymphoma diagnosis, aiding in identifying mature B-cell and Hodgkin lymphomas. Modern diagnostics integrate morphology, immunohistochemistry, and molecular studies for accurate lymphoma classification.

Area of Science:

  • Hematology
  • Oncology
  • Pathology

Context:

  • Lymphoma classification has evolved significantly, moving from decades of confusion to clarity with the Revised European-American Lymphoma (REAL) classification in 1994 and the World Health Organization (WHO) classification in 2001.
  • The 2008 WHO classification (4th edition) further refined categories, encompassing B- and T-lymphoblastic neoplasms, mature B-cell lymphomas, mature T-cell and NK-cell lymphomas, and Hodgkin lymphomas.

Purpose:

  • To provide an overview of the most frequent mature B-cell lymphomas.
  • To highlight the most important classical Hodgkin lymphomas.
  • To focus on the morphological and immunohistochemical features crucial for diagnosis.

Summary:

  • Modern lymphoma diagnosis relies on a multi-faceted approach, integrating morphology, immunohistochemistry, and molecular studies.
  • Expert hematopathologist evaluation, in close collaboration with clinicians, is essential for interpreting diagnostic findings.
  • The WHO classification serves as the current standard for categorizing various lymphoma subtypes.

Impact:

  • Improved diagnostic clarity for lymphomas, facilitating more precise patient management.
  • Enhanced understanding of mature B-cell and classical Hodgkin lymphomas through a focus on key diagnostic markers.
  • Establishes a foundation for consistent and accurate lymphoma diagnosis and subtyping in clinical practice.

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