Basal cell carcinoma arising in outdoor workers versus indoor workers: a retrospective study.

Basal cell carcinoma (BCC) is the most prevalent malignancy in white individuals and continues to be a serious health problem. Individuals who have sustained exposure to UV radiation are at the highest risk for developing BCC. The aim of this study was to compare the features of BCC in outdoor workers (OWs) with a history of occupational exposure to UV radiation versus indoor workers (IWs). We found that OWs are more likely to develop nodular BCC with no increased risk for superficial BCC. The age of onset of BCC was older in OWs than in IWs. Truncal BCC was more common in IWs, which may suggest other etiological factors are involved in BCC such as genetic predisposition.