A common clonal origin of nodal marginal zone B-cell lymphoma and plasma cell myeloma demonstrating different immunophenotypes: a case report of composite lymphoma.

Abstract:We demonstrated an 83-year-old male case of composite lymphoma. Before 18 years, he was diagnosed with nodal marginal zone B-cell lymphoma in the cervical lymph node. Peripheral blood showed anemia and IgA (κ)-type monoclonal gammopathy (IgA; 3,625 mg/dL). Bone marrow aspiration biopsy exhi