title: Malignant lymphoma of B-cell type with polyclonal gammopathy.
mesh_terms: D001402:B-Lymphocytes / Q000276:immunology*; D002471:Cell Transformation, Neoplastic; D002999:Clone Cells / Q000276:immunology; D006801:Humans; D008223:Lymphoma / Q000276:immunology*; D008297:Male; D008875:Middle Aged; D012397:Rosette Formation