PROLONGED ULTRAVIOLET LIGHT-INDUCED ERYTHEMA AND CUTANEOUS CARCINOMA PHENOTYPE

[摘要] A considerable amount of evidence exists in support of the role of UV radiation as a major etiologic factor in human skin cancer, melanoma and carcinoma types. On the basis of epidemiologic studies a phenotype was described which helps to identify the persons who are more susceptible to skin cancer. In an attempt to further define this population, patients with cutaneous carcinoma and a normal control group were exposed to artificial UV light (UVL) and the erythema and tanning responses of each group were measured over a 21 day period. UVL-induced erythema was prolonged in a significantly higher percentage of patients with skin cancer than in control patients, lasting 2-3 wk after single exposures to 6 and 8 times the patient''s minimal erythema dose. The presence of prolonged erythema correlated with the history of previous skin cancer but did not correlate with other established risk factors for cutaneous carcinoma, i.e., fair skin, light hair and light eyes, easy sunburning and poor tanning and Celtic ancestry. Prolonged erythema following UVL radiation may represent an additional risk factor and help to identify the skin cancer-susceptible population.