Moles are benign tumors found on the skin of almost every adult. Scientists have known for years that a mutation in the BRAF gene makes them start growing, but until now haven't understood why they ...

A cancerous mole is a sign of melanoma of the skin. A cancerous mole is typically a new mole or an existing mole that has undergone certain changes. Treatment may involve surgery to remove the mole.

Many moles that develop during adulthood are related to sun exposure and effects on melanin production. They are often benign, but some changes can indicate cancer. A mole, or nevus (plural: nevi), is ...

Any changes to a mole’s color or texture should be discussed with a healthcare professional. While these changes may be harmless, they can sometimes indicate that a mole has become cancerous. Moles ...