A mole is the extra growth of the skin and not all the moles get converted to cancer causing cells. Many people have about 10-40 moles in their body and they may be in the form of round shape or oval shape. The surface of the mold is normally smooth and some moles may be in raised form protruding from the surface of the skin. Moles are pink or brownish in color and in some cases they will take the color of the skin. All the moles in the body will look totally same, but there are some moles which may appear different. Those moles have the chance for developing as cancerous moles.