"skin cancer"的定义和意义

What is "skin cancer"?

Skin cancer is a type of cancer that starts in the skin cells. It is often caused by exposure to ultraviolet (UV) radiation from the sun or tanning beds. Symptoms of skin cancer may include changes in the appearance of moles or spots on the skin, such as a new growth, a wound that does not heal, or changes in color, shape, or size of existing moles. Risk factors for skin cancer include light skin, excessive sun exposure, history of sunburns, family history of skin cancer, and certain genetic factors. Treatment options for skin cancer depend on factors such as the type, size, and location of the cancer, but may include surgery, radiation therapy, chemotherapy, immunotherapy, or targeted therapy. Early detection and protection from UV radiation are important for reducing the risk of skin cancer and improving outcomes.