Skin cancer is a
malignant growth on the
skin which can have many causes. Skin cancer generally develops in the
epidermis (the outermost layer of skin), so a
tumor is usually clearly visible. This makes most skin cancers detectable in the early stages. There are three common types of skin cancer, each of which is named after the type of skin cell from which it arises. Cancers caused by
UV exposure may be prevented by avoiding exposure to sunlight or other UV sources, wearing sun-protective clothes, and using a broad-spectrum
sun screen.
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