A pre-cancerous growth is a skin lesion that could turn into a cancer. Some people have unusual moles known as dysplastic nevi. These flat moles usually have:

• Smooth, scaly or pebbly surfaces
• Irregular edges
• A diameter larger than a pencil eraser

Having a number of dysplastic nevi on your body may increase your risk for melanoma. If you have dysplastic nevi, it is important to check your skin often, limit your exposure to the sun, and see a dermatologist if you notice any changes in these areas of your skin.