Is Waldenstrom’s a “cancer”? – pro

Waldenstrom’s (WM) should be considered cancer since it is a  presentation of a lymphoma. WM is an uncommon lymphoproliferative disorder characterized primarily by bone marrow infiltration and IgM monoclonal gammopathy. It should be considered a distinct clinicopathological entity rather than a clinical syndrome secondary to IgM secretion. Waldenström macroglobulinemia is a clonal disorder of B lymphocytes. This condition is considered to be lymphoplasmacytic lymphoma as defined by the Revised European American Lymphoma Classification (REAL) and World Health Organization (WHO) classification. The concentration of monoclonal IgM can vary widely in WM and it is not possible to define a concentration that reliably distinguishes WM from monoclonal gammopathy of undetermined significance (MGUS) and other lymphoproliferative disorders.  A diagnosis of WM can therefore be made irrespective of IgM concentration if there is evidence on a bone marrow trephine biopsy of bone marrow infiltration by lymphoplasmacytic lymphoma with predominantly an intertrabecular pattern, supported by appropriate immunophenotypic studies.

Owen RG, Treon SP, Al-Katib A, Fonseca R, Greipp PR, McMaster ML, Morra E, Pangalis GA, San Miguel JF, Branagan AR, Dimopoulos MA.
Clinicopathological definition of Waldenstrom’s macroglobulinemia: consensus panel recommendations from the Second International Workshop on Waldenstrom’s Macroglobulinemia.Semin Oncol. 2003 Apr;30(2):110-5.

Dimopoulos MA, Panayiotidis P, Moulopoulos LA, et al: Waldenstrom’s macroglobulinemia: clinical features, complications, and management. J Clin Oncol 2000 Jan; 18(1): 214-26

Dimopoulos MA, Galani E, Matsouka C: Waldenstrom’s macroglobulinemia. Hematol Oncol Clin North Am 1999 Dec; 13(6): 1351-66

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