Final answer:
Basal cell carcinoma is the most common form of skin cancer and human cancer, rarely metastasizes, and often results from long-term sun exposure. It is one of the three major types of skin cancer and is known to respond well to treatment when detected early.
Step-by-step explanation:
Basal cell carcinoma is the most common type of skin cancer and the most common form of human cancer. This type of cancer occurs in the basal cells of the epidermis and is known for being slow-growing and locally destructive, with a characteristic feature of rarely metastasizing. While basal cell carcinoma is frequently found on the head, neck, arms, and back, it can be triggered by long-term sun exposure and other factors like exposure to radiation and arsenic. Early detection improves treatment outcomes, with options including surgery, freezing (cryosurgery), and topical ointments.
There are three main types of skin cancer: basal cell carcinoma, squamous cell carcinoma, and melanoma. Of these, melanoma is the rarest but most serious, as it is highly metastatic and can lead to death if not treated early. Considering over one million new cases of skin cancer each year, this presents a significant health issue. Preventative measures such as wearing sunscreen with high SPF, hats, and protective clothing are essential to minimize the risk of skin cancer.