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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Plasmacytoid lymphomas may be associated with -
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The correct answer is  Plasmacytoid lymphoma

Plasmacytoid lymphoma, also known as plasmacytoid lymphocyte type malignant lymphoma, is a B cell neoplasm that is associated with plasmacytoid differentiation of lymphocytes.
Plasmacytoid lymphocytes are transitional forms between lymphocytes and plasma cells.
These are low grade lymphoid neoplasms that occur in middle aged or older individuals.
In REAL classification, it is classified as lymphoplasmacytic lymphoma.
These may be associated with a monoclonal IgM paraprotein and are thus considered the histological counterpart of Waldenstrom's macroglobulinemia.