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Related Concept Videos

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The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
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Primary central nervous system marginal zone lymphoma.

Elena Flospergher1, Fabrizio Marino1, Teresa Calimeri1

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British Journal of Haematology
|December 6, 2023
PubMed
Summary

Primary central nervous system marginal zone lymphoma (PCNSMZL) is a rare B-cell lymphoma. This review details its presentation, diagnosis, and treatment, highlighting its excellent prognosis with varied therapeutic approaches.

Keywords:
CNS lymphomamarginal zone lymphomaprimary dural lymphoma

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Area of Science:

  • Neuropathology
  • Hematologic Oncology
  • Clinical Neurology

Background:

  • Primary central nervous system marginal zone lymphoma (PCNSMZL) is the most common indolent lymphoma affecting the CNS.
  • Most reported cases are single or small case series, limiting comprehensive understanding.
  • PCNSMZL often presents as dural-based masses, mimicking meningioma, with insidious onset.

Purpose of the Study:

  • To review the clinical presentation, pathological findings, and diagnostic challenges of PCNSMZL.
  • To summarize current treatment options and clinical outcomes for PCNSMZL.
  • To provide recommendations for best clinical practices in managing PCNSMZL.

Main Methods:

  • Literature review of published cases of PCNSMZL.
  • Analysis of diagnostic criteria, including immunophenotyping (CD20+, CD3-, B lymphocytes) and genetic abnormalities (Trisomy 3).
  • Evaluation of treatment modalities (surgery, radiotherapy, chemotherapy) and their outcomes.

Main Results:

  • PCNSMZL comprises CD20+, CD3- small B lymphocytes with plasmacytic differentiation and low proliferation.
  • Trisomy 3 is a common genetic abnormality, unlike MALT1 or IgH translocations.
  • PCNSMZL exhibits an excellent prognosis with diverse treatment strategies, though overtreatment risks require consideration.

Conclusions:

  • Accurate diagnosis of PCNSMZL is crucial, differentiating it from meningioma.
  • Standard of care is evolving due to rarity; varied treatments yield good prognoses.
  • Further research is needed to understand long-term outcomes and iatrogenic effects due to limited follow-up data.