If you spot an unusual growth or a change in a mole, it's a good idea to see a dermatologist for a skin cancer check. Skin cancer is fairly easy to treat when it's caught early. That's why it's so important to see a dermatologist as soon as you see something concerning. Here are things to know about getting a skin cancer check. The Check Takes Several Minutes Since skin cancer can appear anywhere, your dermatologist will check you over from head to toe with a magnifying glass that makes it easy to see growths and moles on your skin.