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[Effect of PUVA and SUP therapy on nevocellular nevi (author's transl)].

An increase of size from in average 4.7 to 5.3 mm2 was observed in 28 of 36 nevocellular nevi after selective ultraviolet phototherapy and photochemotherapy for psoriasis within 4 weeks. In 15 of 36 nevocellular nevi the moles revealed a significant darkening. Autoradiography showed an increased proliferation of melanocytes, keratinocytes and dermal cells in moles exposed to UV-light in comparison with unexposed.