It can be treated by Curettage and desiccation, Radiation therapy, Cryosurgery, Mohs micrographic surgery Medical therapy using creams that attack cancer cells (5-Fluorouracil--5-FU, Efudex, Fluoroplex)
or stimulate the immune system (Aldara).
http://www.medicinenet.com/skin_cancer/page2.htm
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