Slide show: Melanoma pictures to help identify skin cancer
Photo of mole that may become melanoma
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The mole shown here does not fit into any of the other criteria — size, shape, color or pattern. But watch moles like this one closely for changes, due to the small amount of color irregularity.

Look for changes over time, such as a mole that grows in size or that changes color or shape. Moles may also evolve to develop new signs and symptoms, such as new itchiness or bleeding.

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