The incidence of melanoma is rising faster than any other malignancy, with the exception of lung cancer in women. It varies from 4 to 26 per 100,000 in the United States. In 1991 one out of every 105 Americans was at risk. Fair complexion, sunlight exposure, multiple benign nevi, and previous melanoma are all risk factors. All suspicious pigmented lesions should be biopsied if they have variable color, raised surface, irregular border, ulceration, history of recent growth and size greater than 1 cm.
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