[Castleman's lymphoma associated with swelling of pancreas and pancytopenia]

A 73-year-old male was admitted because of slight fever. Systemic lymphadenopathy, polyclonal hypergammaglobulinemia, swelling of pancreas and submaxillary gland and progressing pancytopenia probably by immune mechanism were observed. Histological examination of lymph node showed no destruction of the structure and mild capillary proliferation in the follicle centers. Between follicles, many immunoblasts and mature plasma cells which were polyclonal and mild capillary proliferation were recognized. He was diagnosed as having multicentric Castleman's lymphoma. Administration of prednisolone 10 mg per day improved his symptoms and laboratory data. Then he has been followed up. Referring to the literatures, we discussed the relation between multicentric Castleman's lymphoma and the related diseases.