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What are the different types of moles?
Congenital nevi are moles that appear at birth. Congenital nevi occur in about one in 100 people. These moles might be more likely to develop into melanoma than are moles that appear after birth. If the mole is more than eight inches in diameter, it poses more risk of becoming cancerous. Dysplastic nevi are moles that are larger than average (larger than a pencil eraser) and irregular in shape. They tend to have uneven color with dark brown centers and lighter, uneven edges. These moles tend to be hereditary. People with dysplastic nevi might have more than 100 moles and have a greater chance of developing malignant (cancerous) melanoma. Any changes in the mole should be checked by a dermatologist to detect skin cancer.
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