What are the chances of having cancerous moles?

Depends on the mole: While moles are generally benign, or non-cancerous, there are some that can contain cancer. One class of mole, called congenital giant nevus, is very large and dark and can become a melanoma. Typical moles are very unlikely to be cancerous, but any concerning lesion should be evaluated by a physician.

See a doctor: It is hard to answer your question without an examination. It is concerning when moles change - change in size, color, become irregularly shaped, itch, bleed. Most moles are relatively easy to remove and test. Please see your primary doctor or a surgeon to see if this needs to be removed and tested.