Definition
Lymphoplasmacytic lymphoma (LPL) is defined as a B-cell lymphoma consisting of a mixture of lymphocytes, plasmacytic lymphocytes, and monoclonal plasma cells that does not conform to any other entity of small B-cell lymphoma with plasmacytic differentiation (Swerdlow et al. 2017). LPL typically manifests in the bone marrow and spleen and less frequently in lymph nodes and other organs. Waldenström Macroglobulinemia (WM) is defined as a malignant lymphoma with the morphology of LPL involving the bone marrow and that is associated with monoclonal IgM paraproteinemia; vice versa, an IgM monoclonal paraprotein can be detected in the majority of LPL patients. Identification of the LPL hallmark mutation MYD88 L265P has greatly facilitated and added in the specification of the diagnosis.
Incidence and Epidemiology
LPL is a rare disease representing approximately 2% of non-Hodgkin lymphomas. Patients usually present at a median age of roughly 70 years, and the male gender...
References and Further Reading
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Lin, P., Mansoor, A., Bueso-Ramos, C., Hao, S., Lai, R., & Medeiros, L. J. (2003). Diffuse large B-cell lymphoma occurring in patients with lymphoplasmacytic lymphoma/Waldenstrom macroglobulinemia. Clinicopathologic features of 12 cases. American Journal of Clinical Pathology, 120(2), 246–253. https://doi.org/10.1309/R01V-XG46-MFCD-VNHL.
Schmidt, J., Federmann, B., Schindler, N., Steinhilber, J., Bonzheim, I., Fend, F., & Quintanilla-Martinez, L. (2015). MYD88 L265P and CXCR4 mutations in lymphoplasmacytic lymphoma identify cases with high disease activity. British Journal of Haematology, 169(6), 795–803. https://doi.org/10.1111/bjh.13361.
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Sohani, A. R., Rodig, S. J., & Harris, N. L. (2017). Lymphoplasmacytic lymphoma and waldenström macroglobulinemia. In E. S. Jaffe, D. A. Arber, E. Campo, N. L. Harris, & L. Quintanilla-Fend (Eds.), Hematopathology (2nd, p. 285). Saunders/Elsevier, Philadelphia.
Staiger, A. M., Ott, M. M., Parmentier, S., Rosenwald, A., Ott, G., Horn, H., & Griese, E.-U. (2015). Allele-specific PCR is a powerful tool for the detection of the MYD88 L265P mutation in diffuse large B cell lymphoma and decalcified bone marrow samples. British Journal of Haematology, 171(1), 145–148. https://doi.org/10.1111/bjh.13369.
Swerdlow, S. H., Kuzu, I., Dogan, A., Dirnhofer, S., Chan, J. K. C., Sander, B., et al. (2016). The many faces of small B cell lymphomas with plasmacytic differentiation and the contribution of MYD88 testing. Virchows Archiv: An International Journal of Pathology, 468(3), 259–275. https://doi.org/10.1007/s00428-015-1858-9.
Swerdlow, S. H., Campo, E., Harris, N. L., Jaffe, E. S., Pileri, S. A., Stein, H., & Thiele, J. (Eds.). (2017). WHO classification of tumours of haematopoietic and lymphoid tissues (World Health Organization classification of tumours, Revised 4th ed.). Lyon: International Agency for Research on Cancer.
Treon, S. P., Xu, L., Yang, G., Zhou, Y., Liu, X., Cao, Y., … Hunter, Z. R. (2012). MYD88 L265P somatic mutation in Waldenstrom’s macroglobulinemia. The New England Journal of Medicine, 367(9), 826–833. https://doi.org/10.1056/NEJMoa1200710.
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Ott, G. (2018). Lymphoplasmacytic Lymphoma. In: van Krieken, J. (eds) Encyclopedia of Pathology. Encyclopedia of Pathology. Springer, Cham. https://doi.org/10.1007/978-3-319-28845-1_3870-1
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DOI: https://doi.org/10.1007/978-3-319-28845-1_3870-1
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