Skin cancer is one of the most common forms of the disease and can appear on parts of the body that you wouldn't initially expect.
Two branches of skin cancer are categorised as nonmelanoma and melanoma and while both are treatable, the latter can spread to other organs of the body if not treated in time.
The most common sign of melanoma is a dark brown mole appearing on the skin. As exposure to UV rays is the leading cause of skin cancer, it's understandable to assume these marks only appear on exposed parts of the body - like the arms, legs and chest.