Actinic keratosis is the most common precancer. It affects more than 58 million Americans. Approximately 65% of all squamous cell carcinomas arise in lesions that previously were diagnosed as actinic keratoses.
Basal cell carcinoma (BCC) is the most common form of skin cancer. An estimated 2.8 million are diagnosed annually in the United States. BCCs are rarely fatal but can be highly disfiguring if allowed to grow.
Squamous cell carcinoma (SCC) is the second most common form of skin cancer. An estimated 700,000 cases are diagnosed each year in the United States, resulting in approximately 2,500 deaths.