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Updated: Dec 18, 2025
Flow Cytometric Characterization of Murine B Cell Development
Published on: January 22, 2021
Flow cytometry in the diagnosis of mature B-cell lymphoproliferative disorders
Camille Debord1, Soraya Wuillème1, Marion Eveillard1
1Hematology Biology Department, Nantes University Hospital and CRCINA, Nantes, France.
Insights
Multiparameter flow cytometry aids in diagnosing B-lineage lymphoproliferative disorders (LPD). This method identifies clonal proliferation and aids in classifying lymphomas for effective patient management.
Area of Science:
- Hematology
- Immunology
- Oncology
Background:
- B-lineage lymphoproliferative disorders (LPD) are common hematologic malignancies.
- Diagnosis can be incidental or associated with specific clinical features.
- Accurate diagnosis is crucial for appropriate patient management.
Purpose of the Study:
- To review the role of multiparameter flow cytometry in diagnosing B-lineage LPD.
- To describe key immunophenotypic features of small-cell and large-cell lymphomas.
- To provide guidance for diagnostic interpretation and further investigations.
Main Methods:
- Multiparameter flow cytometry on peripheral blood and bone marrow samples.
- Analysis of immunophenotypic markers, including CD19, surface immunoglobulin light chain restriction, and CD5.
- Integration of flow cytometry data with clinical and biological features.
Main Results:
- CD19 expression is a primary gating step for B-cell analysis.
- Surface immunoglobulin light chain restriction indicates clonal proliferation.
- CD5 expression helps differentiate chronic lymphocytic leukemia and mantle cell lymphoma.
- Specific immunophenotypic profiles characterize various LPDs.
Conclusions:
- Multiparameter flow cytometry is essential for rapid diagnosis and management of B-lineage LPD.
- Interpretation requires integration with clinical data and can be complemented by chromosomal and molecular studies.
- Standardized immunophenotypic analysis aids in accurate lymphoma classification.
Abstract:
B-lineage lymphoproliferative disorders (LPD) are rather frequent diseases, associated with specific clinical or biological features but also sometimes of fortuitous discovery. Multiparameter flow cytometry plays a major role for a rapid diagnostic indication, on peripheral blood or bone marrow samples in most instances, guiding complementary analyses and allowing for the proper therapeutic management of patients. After describing the important pre-analytical precautions required for an adequate assessment, the immunophenotypic features of small-cell and large-cell lymphomas are described in this review. The ubiquitous expression of CD19 is a first mandatory gating step. A possible clonal proliferation is then suspected by the demonstration of surface immunoglobulin light chain restriction. The aberrant presence of CD5 allows to segregate chronic lymphocytic leukemia and mantle cell lymphoma in most cases. Other LPD exhibit specific immunophenotypic features. A table of useful markers and a decision tree are provided. Of note, immunophenotypic data should as much as possible be interpreted in an integrated manner, involving the patient's clinical and other biological features, and be completed by further chromosomal and/or molecular investigations.
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