Abstract
The skin cancer risk theoretically attributable to radon associated alpha particle radiation is calculated on the basis of recent dosimetry, and published radiation risk factors. The results suggest that of the order of 2% (range 1%-10%) of non-melanoma skin cancers in the UK may be associated with radon exposure at the average UK radon concentration of 20 Bq m-3. The range quoted is due solely to uncertainties in the estimate of the radon dose to the basal layer of the skin, and additional sources of uncertainty are discussed. The estimate is dependent on the assumption that the target cells for radiation induced skin cancer lie in the basal layer of the epidermis, and that irradiation of the dermis is not necessary for skin cancer induction. Due to the effect of ultraviolet radiation on the risk factors for ionising radiation, ultraviolet radiation exposure must also be involved in the induction of the majority of any skin cancer cases linked to radon exposure.
Published Version
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