Cancer
Skin Cancer - Non-Melanoma See All Overview See All Understanding Your Diagnosis See All Deciding on Treatment See All Managing Side Effects See All Prevention and Screening See All Cancer FAQs See All Anatomy of the Skin in Overview The skin is the body's largest organ. It serves as a protective shield against heat, light, injury, and infection. ...more Nonmelanoma Skin Cancer: Introduction in Overview Skin cancer is a disease that begins in the cells of the skin. There are several types of skin cancer (carcinoma). Melanoma is the most serious.