Sezary syndrome is the leukemic and erythrodermic form of cutaneous T-
cell lymphoma (CTCL). Since 1987 extracorporeal photochemotherapy (ECP
) has been available for treatment of erythrodermic CTCL in the USA. T
hrough a group of case reports, we want to emphasize ECP as the treatm
ent of choice for erythrodermic CTCL.