What type of skin cancer is known for its potential to metastasize?

Melanoma is considered the type of skin cancer most well-known for its potential to metastasize, meaning it can spread to other parts of the body. This aggressiveness is due to the nature of the cells involved; melanoma originates from melanocytes, which are responsible for producing melanin, the pigment in the skin. When melanoma develops, it can invade surrounding tissues and, if not detected early, can enter the bloodstream or lymphatic system, leading to the formation of new tumors in distant organs.

In contrast, basal cell carcinoma and squamous cell carcinoma, while they are also types of skin cancer, typically do not metastasize to the same extent as melanoma. Basal cell carcinoma generally remains localized and is less aggressive, often treated effectively through surgical removal. Squamous cell carcinoma has a higher risk of metastasis compared to basal cell carcinoma, but it is still less likely to spread than melanoma. Adenocarcinoma is a type of cancer that arises from glandular tissue and is not classified as a skin cancer. Thus, the likelihood of metastasis and the biology of these skin cancers underscore why melanoma is recognized for its potential to spread extensively.