DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Melanoma excision scar on the heel of a 67 year old woman. Melanoma is a type of skin cancer that arises from the melanocytes, the cells that produce the pigment (melanin) that give skin its colour. The main cause of melanoma is exposure to ultraviolet radiation in sunlight. It is an aggressive cancer that often spreads (metastasises) to other parts of the body.
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