If you notice any changes in the appearance of a mole or patch of skin, don't wait. Bring it to your doctor's attention immediately. The sooner melanoma is found, the greater the chances of treating it successfully. Melanoma can grow quickly, and it can grow in an area of skin that you do not notice or cannot see (for example, on your back). That's why you should see a doctor for routine skin cancer screenings.
During a skin cancer screening, your doctor will probably ask about your medical history and inspect your skin from head to toe—including areas not exposed to the sun. He or she will record the location, size, and color of any moles. If a mole looks unusual, the doctor may arrange for a biopsy.
A biopsy is a fairly painless surgical procedure. Sometimes it takes place right in the doctor's office. The suspicious skin, or a piece of it, is removed and examined under a microscope. If the biopsy shows that the growth is cancer, your doctor may recommend additional treatment.