Precancerous lesions or actinic keratosis are considered “precancers,” and have the potential to turn into squamous cell carcinomas. Actinic keratosis appear as small pink or red spots with a rough surface, usually on sun-exposed areas. They may be more easily felt than seen. Early treatment of actinic keratosis can prevent their transformation into more serious squamous cell carcinomas. Actinic keratosis are usually treated with cryotherapy (freezing with liquid nitrogen) or by application of chemotherapy or immune enhancing cream.