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  Indian J Med Microbiol
 

Figure 5: Lymphoplasmacytic lymphoma. (a) Histologic picture of lymphoplasmacytic lymphoma. The nodal architecture is replaced by a dense lymphoplasmacytic infiltrate (H and E, ×2). (b) Higher magnification view of lymphoplasmacytic lymphoma. Note the abundant plasmacytoid lymphocytes in the infiltrate (H and E, ×40). (c) The plasmacytoid lymphocytes are positive for CD20, (CD20, ×4). (d) MUM1 staining of the same area. The plasmacytoid lymphocytes are MUM1+ (MUM1, ×4)

Figure 5: Lymphoplasmacytic lymphoma. (a) Histologic picture of lymphoplasmacytic lymphoma. The nodal architecture is replaced by a dense lymphoplasmacytic infiltrate (H and E, ×2). (b) Higher magnification view of lymphoplasmacytic lymphoma. Note the abundant plasmacytoid lymphocytes in the infiltrate (H and E, ×40). (c) The plasmacytoid lymphocytes are positive for CD20, (CD20, ×4). (d) MUM1 staining of the same area. The plasmacytoid lymphocytes are MUM1+ (MUM1, ×4)