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Related Concept Videos

Secondary Lymphoid Organs01:15

Secondary Lymphoid Organs

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Secondary organs, including lymph nodes, the spleen, and mucosa-associated lymphoid tissue (MALT), work harmoniously to protect us from disease and infection.
The spleen is a vital organ in the lymphatic system, nestled in the upper left side of the abdomen. It is composed of two primary regions: the red pulp and the white pulp, each having distinct functions. The red pulp performs a significant role in blood filtration. It efficiently purges the blood of old or damaged red blood cells and...
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Primary lymphoid organs are pivotal in the formation, development, and maturation of lymphocytes, the white blood cells that serve as the backbone of our immune system. This crucial function underscores their fundamental role in maintaining our overall health and immunity. The two primary lymphoid organs of prime importance are the red bone marrow and the thymus.
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Tumor Engraftment in a Xenograft Mouse Model of Human Mantle Cell Lymphoma
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Splenic marginal zone lymphoma.

Miguel A Piris1, Arantza Onaindía1, Manuela Mollejo2

  • 1Servicio de Anatomía Patológica, Hospital Universitario Marqués de Valdecilla, Santander, Spain.

Best Practice & Research. Clinical Haematology
|March 15, 2017
PubMed
Summary
This summary is machine-generated.

Splenic marginal zone lymphoma (SMZL) is an indolent B-cell lymphoma. Specific genetic mutations and clinical factors influence SMZL

Keywords:
Marginal zoneMonoclonal B-cell lymphocytosisNOTCH2/KLF2Splenic lymphoma

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Area of Science:

  • Hematology
  • Oncology
  • Genetics

Background:

  • Splenic marginal zone lymphoma (SMZL) is an indolent small B-cell lymphoma.
  • It characteristically involves the spleen and bone marrow with micronodular infiltration.
  • Distinctive marginal zone differentiation is a key feature of SMZL.

Purpose of the Study:

  • To characterize the mutational spectrum of SMZL.
  • To identify molecular markers associated with clinical variability.
  • To explore the distinction between SMZL and Monoclonal B-cell lymphocytosis with marginal zone phenotype.

Main Methods:

  • Analysis of the mutational spectrum in SMZL cases.
  • Identification of genetic alterations like 7q loss, NOTCH2, and KLF2 mutations.
  • Correlation of molecular markers with clinical presentation and variability.

Main Results:

  • SMZL exhibits specific genetic findings, including 7q loss and mutations in NOTCH2 and KLF2.
  • These genes are implicated in marginal zone differentiation.
  • Clinical variability in SMZL is linked to tumoral load, performance status, and molecular markers (7q loss, p53, NOTCH2, KLF2).

Conclusions:

  • The mutational spectrum of SMZL provides diagnostic insights.
  • Molecular markers are associated with significant clinical variability.
  • Differentiating SMZL from Monoclonal B-cell lymphocytosis with marginal zone phenotype requires further research into precise diagnostic thresholds.