[RISK OF SKIN CANCER FROM EXPOSURE TO NATURAL OPTICAL RADIATION]
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Skin tumors are the most frequent neoplasms worldwide in Caucasian subjects, and UV exposure is one of the most relevant risk factors in their etiology. Cumulative UV exposure is strongly associated with an increased occurrence of both basal and squamous cell carcinomas (i.e. Non melanoma skin cancers - NMSC), while for malignant melanoma the role of UV radiation as risk factors seems more related to intermittent and intense exposures, able to induce repeated sunburns, at young ages. Considering the occupational risk, currently UV radiation, part of the solar radiation (SR) spectrum, is one of the major risks in all jobs including outdoor activities (outdoor work - OW): many studies show high levels of solar UV exposure during OW, nevertheless to date the European, and Italian, legislation on occupational risks prevention does not include specific requirements for SR exposure at work, as occupational exposure limits values or workers' health surveillance. This is not coherent with the strong associations showed in scientific literature in particular between the occurrence of NMSC and a history of OW.
Accordingly, considering the high exposure levels, the large number of outdoor workers and the strong associations with NMSC, we'd expect a relevant number of occupational skin cancers (OSC) to be reported every year to the national workers' compensation authorities in European countries. Nevertheless, in Italy, as in other European countries, the number of reported UV-induced OSC is much lower than the expected number of OSC, with less than 40 cases reported on average in Italy in last years compared to about a thousand of expected cases incident in outdoor workers per year. An increasing in the reporting of OSC would certainly be important, for the purpose of a better recognition of the real dimension of the phenomenon, and to stimulate the implementation of adequate preventive strategies, in order to guarantee an improved protection of outdoor workers and a more appropriate prevention of the adverse health effects related to solar UV exposure.
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