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Diffuse large-cell lymphoma with monoclonal IgM kappa and cold agglutinin
American Journal of Clinical Pathology
|July 1, 1986
Summary
A patient presented with cold agglutinin disease, a rare autoimmune condition. This ultimately led to the diagnosis of diffuse large-cell lymphoma, highlighting a crucial link between hematologic malignancies and autoimmune manifestations.
Area of Science:
- Hematology
- Immunology
- Oncology
Background:
- Cold agglutinin disease is a rare autoimmune hemolytic anemia.
- Monoclonal gammopathies can be associated with lymphoproliferative disorders.
Observation:
- A patient with diffuse large-cell lymphoma presented with a serum monoclonal immunoglobulin M (IgM) kappa and cold agglutinin.
- The cold agglutinin was the initial manifestation, preceding lymphoma diagnosis by at least two months.
Findings:
- Lymphoma cells expressed surface and cytoplasmic IgM kappa.
- This case demonstrates a direct association between cold agglutinin and IgM kappa-producing lymphoma.
Implications:
- Early identification of cold agglutinins may aid in diagnosing underlying lymphoproliferative disorders.
- Understanding this association can improve diagnostic strategies for patients with unexplained autoimmune hemolytic anemia.
- This case underscores the importance of investigating hematologic malignancies in patients with persistent cold agglutinin disease.