Abstract
IntroductionStudies reporting incidences of non-melanoma skin cancer (NMSC) are heterogeneous, depend on the geographic area of the studied population and are often short-term. The aim of this study is to determine the incidence of NMSC in patients treated with oral PUVA therapy in the Mediterranean area. Material and methodsA retrospective, observational study was carried out with a sample of 234 patients treated with systemic PUVA between 1982 and 1996, carrying out a historical follow-up until May 2017. The incidencedensity rate of CCNM (crude and adjusted) was calculated by direct standardisation. The incidence of CCNM was compared with that reported in the general population in a similar geographical area. Results50 neoplasms were diagnosed in 22 patients. The prevalence of CCNM in patients treated with phototherapy was 10.3%. The mean follow-up time was 21 years. The crude-adjusted incidence density rate of CCNM was 554.4-183.9 cases/100,000 treated patients per year. The crude-adjusted incidence density rate of basal cell carcinoma was 352.3-111.2 cases/100.000 patients and of squamous cell carcinoma was 229-77.7 cases /100,000 patients. ConclusionPUVA therapy is associated with an increased risk of CCNM inthe Mediterranean population.
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