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Light-chain-restricted hematogones are a potential diagnostic pitfall for B-cell lymphoma
Xiaofeng Yang1, Zhihua Zhang2,3, Xinhong Yang2,3
1Department of Pediatric Surgery, The Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, China.
Light-chain-restricted hematogones (LCR-HGs) can mimic B-cell lymphoma on bone marrow flow cytometry. Accurate differentiation is crucial to avoid misdiagnosis, especially with antibody-based therapies.
Area of Science:
- Hematology
- Immunophenotyping
- Flow Cytometry
Background:
- Hematogones are normal B-cell precursors.
- Light-chain restriction can occur in hematogones (LCR-HGs).
- LCR-HGs can be mistaken for B-cell malignancies.
Purpose of the Study:
- To differentiate light-chain-restricted hematogones from B-cell lymphoma.
- To highlight potential diagnostic pitfalls in bone marrow evaluation.
Main Methods:
- Retrospective review of eight patients.
- Bone marrow aspirate specimens analyzed by flow cytometry (FLC).
- Evaluation for lymphoma and multiple myeloma.
Main Results:
- FLC immunophenotypes of bone marrow specimens showed LCR-HGs in eight cases.
- These cases included various B-cell lymphomas and multiple myeloma.
- One case of T-cell lymphoma also showed LCR-HGs.
Conclusions:
- Failure to recognize LCR-HGs can lead to erroneous diagnoses.
- Diagnostic test interference from antibody-based therapies can complicate interpretation.
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