SummaryThe authors report the case of a 86-year-old patient with a Sezary’s syndrome. Clinically they emphasize the uncommon minimal dermatologic lesions and question the origin of the cutaneous lym phomas. The relation between these cutaneous lymphomas and the other T-cell malignancies is briefly discussed. The leukemic cells are in this case highly typical and their morphology and immunologic functions are described.No specific treatment has been applied.The patient died from a pneumopathy two months after his admission.