[Environmental and occupational factors in skin carcinogenesis. Indications for therapy and prevention].

The authors review the environmental and occupational factors in cutaneous cancerogenesis, group them according to their characteristics, and in particular distinguish between factors of physical and chemical nature. The authors also discuss the influence of predisposing factors related to the somatic makeup (xeroderma pigmentosus) and to work environment. Particular emphasis is given to skin precancerous and therefore to the importance of a mass screening and an effective health education. The authors illustrate the disorder with their clinical pictures.