抄録
A 72-year-old man had a 1-year history of erythema on the left upper arm. A biopsy specimen was diagnosed as malignant lymphoma, diffuse large cell type. Atypical lymphocytic cells expressed B-cell lineage markers such as CD19, CD20 and CD22 antigens. Rearranged bands were observed for immunoglobulin heavy-chain gene by Southern blot analysis. Physical examination showed left tonsilla and left neck lymphnode swelling. CT scans showed multiple lesions considered to be stage IV.
