[Sézary syndrome with two lymphocyte subpopulations expressing either CD4+/CD8- or CD4-/CD8+].

A 61-year-old man was admitted in March 1996 complaining of erythroderma, and Sézary syndrome was diagnosed. The leukocyte count was 33,590/microliter with 70.9% abnormal lymphocytes expressing two different types of antigenicity, either CD4+/CD8- (44.5%) or CD4-/CD8+ (48.9%). Clonal T-cell receptor beta rearrangement was not found on Southern blot analysis. He suffered repeated sepsis dueto methicillin-resistant Staphylococcus aureus. Combination chemotherapy was not effective for erythroderma and organomegaly, and deoxycoformycin revealed a transient effect. He died of MRSA enterocolitis in July 1996.