Another cancer causing lesion that can occur on the feet are called Actinic Keratosis. Although most commonly found in sun-exposed areas of the body such as the face, ears, and back of the hands, these lesion can also occur on the foot. They are characterized as either flat or elevated with a scaly surface. They can either be reddish or skin colored. On the foot they are frequently mistaken for planters warts. These lesions are the precursor of epidermis carcinoma. Treatment for these lesions should be through as they are definitely precancerious. Treatment consists of freezing the lesions with liquid nitrogen or sharp excision.