Skin Cancer and Warts in Immunosuppressed Renal Transplant Recipients

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Abstract
Non-melanoma skin cancer (NMSC) is increasingly recognised as a complication of long-term immunosuppression and has been particularly studied in renal transplant recipients (RTR). A population study of renal transplant recipients has been performed with analysis of those features contributing to a high rate of detection of NMSC, such that 40% patients with fair skin have NMSC 5 years after transplantation, 90% of the total patient population have warts 5 years after transplantation, many being atypical and in sun-exposed sites. Therefore, contributory factors in these patients include not only the global immunosuppression, ultraviolet radiation (UVR)-induced mutagenesis and photoimmunosuppression, but also the widespread presence of human papillomavirus (HPV) infection, including the unusual epidermodysplasia verruciformis (EV)-associated cutaneous oncogenic HPV.