A skin self-exam is used to identify suspicious growths that may be
cancer or growths that may develop into skin cancer (precancers). Adults should
examine their skin once every month. Look for any abnormal skin growth or any
change in the color, shape, size, or appearance of a skin growth. Check for any
area of injured skin (lesion) that does not heal.
Skin cancer is a disease in which malignant (cancer) cells form in the tissues of the skin.
The skin is the body's largest organ. It protects against heat, sunlight, injury, and infection. Skin also helps control body temperature and stores water, fat, and vitamin D. The skin has several layers, but the two main layers are the epidermis (upper or outer layer) and the dermis (lower or inner layer).
The epidermis is made up of 3 kinds of cells:
Squamous cells are the thin, flat cells that...