Basal cell carcinoma (BCC) is a type of skin cancer. They are abnormal, uncontrolled growths or lesions that arise in the skin’s basal cells, which line the skin’s deepest layer. BCC often look like open sores, red patches, shiny bumps or scars. Basal cell carcinoma occurs most often on areas of the skin that are overly exposed to the sun. BCC can be highly disfiguring if allowed to grow, but are typically not subject to spreading beyond their site of origin.