Abstract
The effectiveness of non-interval topical PUVA treatment was studied in four patients with mycosis fungoides at the plaque stage. Five regions of each patient were exposed to UVA immediately, 30 minutes, 60 minutes, 90 minutes, and 120 minutes, after topical application of 8-methoxypsoralen, respectively. The effects of these treatments were evaluated by clinical appearance and histological findings after the 20th treatment. All five regions were more improved clinically and histologically than the control region, which was not given PUVA therapy. There were no clear differences clinically among these five regions. Biopsy specimens from each region revealed the disappearance of epidermotropism and a marked decrease in atypical mononuclear cell infiltrations in the dermis. From these data, we concluded that there were no clear differences between these five treatments clinically or histologically and that non-interval PUVA therapy is useful for the early stages of mycosis fungoides. To our knowledge, this is the first report of non-interval PUVA therapy for mycosis fungoides.
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