AN ESTIMATION OF SQUAMOUS-CELL CARCINOMA RISK FROM ULTRAVIOLET-RADIATION EMITTED BY FLUORESCENT LAMPS

The risk of squamous cell carcinoma (SCC) from ultraviolet radiation ( UV) emitted by unfiltered fluorescent lamps was assessed. The assessme nt employed a mathematical power model based on human epidemiological data, which relates the SCC incidence in the United States white popul ation to ambient solar UV. The annual numbers of new SCC on anatomical sites chronically exposed to solar UV (head/face/neck and hands) were estimated for indoor workers. Then the number of SCC that may be caus ed by additional UV exposure from indoor fluorescent lighting was esti mated: the lifetime exposure of indoor workers to typical fluorescent lighting (if unfiltered) may add 3.9% (1.6-12%) to the risk from solar W, resulting in the induction of an additional 1500 (600-4500) SCC pe r annum in the United States. This calculated projection must be compa red with the 110,000 SCC caused by solar exposure. Thus, this analysis suggests there may be a small increased risk of SCC from exposure to UV-emitting fluorescent lamps.