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 ...

Moles, which occur when pigment cells called melanocytes cluster together, are very common. Most people have 10-40 moles on their skin, especially on sun-exposed areas. How many moles you have may ...

Learn the 5 early warning signs your mole could be cancerous, plus other symptoms and risk factors to watch for. Detect skin cancer early and protect your health. Moles are ordinary types of skin ...