“…In such a situation the average speci®city of 59.5% can be considered a good indicator of the diagnostic potential of the method for detecting the melanomas. Also the PPV of 17.5% is of the same order as the values reported for classical screening programs carried out in U.S.A. and the Netherlands [PPV 11% and 18% according to data presented by Trampisch et al (1997)]. It should be noticed, however, that according to other studies of screening programs from 35% to 50% of clinically diagnosed melanomas are con®rmed by histopathologic examinations (Bologna et al, 1990;Koh et al, 1990;Leffel et al, 1993;Wolf et al, 1996).…”