First you will be given a local anaesthetic. When the area is numb, the doctor will scrape away the cancer using a spoon-shaped instrument called a curette. After this treatment, you may develop a scar which is different from your normal skin colour. Any scarring may be more noticeable if you have fair skin. This is called cryotherapy or cryosurgery.
Liquid nitrogen is sprayed onto the cancer to freeze it.
Afterwards it may feel like a burn. The treated area needs to be covered with a dressing until a scab forms. About a month after the treatment, the scab drops off and the tumour should have cleared. You may have a white scar. Occasionally, more than one treatment is needed to remove the tumour completely.