Precancerous skin lesions are changes in skin that aren't cancerous, but could become cancer over time.
It is very possible that you are having actinic keratosis (red or scaly patch), a precancerous lesion that forms on sun-damaged skin, affecting the most superficial skin layer, that eventually will turn into squamous cell carcinoma.
Cryosurgery, or freezing the affected tissue is one of the most common treatment for AK.
AK are usually very responsive for treatment, but, regular follow ups are important for checking for relapse or new precancerous changes.