What is the most common type of skin cancer?

Basal cell carcinoma is the most common type of skin cancer, accounting for the majority of skin cancer cases diagnosed each year. This type of cancer typically arises from the basal cells, which are located in the lower part of the epidermis. Basal cell carcinoma is generally associated with prolonged exposure to ultraviolet (UV) radiation from the sun or tanning beds.

What makes basal cell carcinoma particularly significant is its relatively low likelihood of metastasis compared to other skin cancers. While it can cause local destruction of surrounding tissue if left untreated, its overall prognosis is excellent. Regular skin examinations and prompt treatment can often lead to complete resolution of the cancer.

In contrast, squamous cell carcinoma, while also common and classified as a non-melanoma skin cancer, is less frequently diagnosed than basal cell carcinoma. Melanoma is a more aggressive form and less common overall, though it poses a higher risk of metastasis and can have serious consequences if not treated early. Atypical nevus refers to a type of mole that has an irregular appearance and can signal a potential risk for melanoma but is not classified as a skin cancer itself.

Understanding the prevalence and characteristics of these types of skin cancer can help in educating patients on the importance of sun safety and regular skin