“…AK, and non-melanoma skin cancer (NMSC), are both also risk factors for the development of malignant melanoma (MM); a study in Italy (13) has shown that more than 40% of patients with a previous diagnosis of multiple AKs developed a NMSC or a MM during a follow-up period of 5-11 years. Solid-organ transplanted patients, such as those with heart, lung and kidney transplants, are at specifically increased risk of developing malignancies, including skin cancer and, especially, SCC, due to immunosuppression (14)(15)(16)(17)(18)(19). The risk of SCC has been found to increase for those with more than 5 AKs, and the majority of SCCs arise from AKs (2).…”