Figure 4: Ultraviolet radiation associated malignant melanoma. Note the asymmetric and irregular border and the multiple color shades. Malignant melanomas must be managed with early and aggressive surgical excision and will frequently spread or metastasize distantly to other organs. Source: US Centers for Disease Control and Prevention (CDC) No copyright permission required. Available at http://www.cdc.gov/excite/skincancer/mod10.htm.