Moles can turn into cancerous melanomas so it's important you check your moles regularly and talk to your doctor if there is any sign of danger. Follow this 4 step, A-B-C-D, guide when checking your moles and if any of the points are true, be sure to take appropriate action. Asymmetry: If one half of the mole does not match the other half https://www.cancermall.co.kr/