Basal cell carcinoma (BCC) is a type of skin cancer that originates in the basal cells, which are located in the outer layer of the skin. It is the most common form of skin cancer and typically develops in areas exposed to the sun, such as the face, neck, and ears. BCC usually appears as a small, shiny bump or a sore that doesn't heal. This cancer grows slowly and rarely spreads to other parts of the body, making it less dangerous than other skin cancers like melanoma. However, if left untreated, BCC can cause significant local damage to surrounding tissues. Early detection and treatment are important for a good prognosis.