An annual mole check is a must. MetroDerm dermatologists are experts at detecting abnormal/cancerous moles. Most people have at least 10 moles on their bodies and that’s perfectly normal. Moles are formed when skin cells that produce pigment, melanocytes, group together. There are, however, atypical moles which should be a cause for concern. It’s important to have your moles checked annually by your MetroDerm dermatologist. Even though these types of lesions are painless, they should be examined immediately if they change in size or color.