Benign,dysplastic,ca. A dermatologist (skin doctor) is trained to differentiate among types of moles, also called nevi. That expertise has been shown to be live saving. A short overview is at http://en.Wikipedia.Org/wiki/dysplastic_nevus . Some people tend to have multiple dysplastic (abnormal appearing) nevi, and some have a genetic syndrome. The risk of being or becoming cancer varies type of nevus.