<unk>  is a malignant growth on the<unk>  which can have many causes.<unk>  generally develops in the epidermis (the outermost layer of<unk> , so a tumor is usually clearly visible. This makes most<unk> s detectable in the early stages. There are three common types of<unk> , each of which is named after the type of<unk>  cell from which it arises. Cancers caused by UV exposure may be prevented by avoiding exposure to sunlight or other UV sources, wearing sun-protective clothes, and using a broad-spectrum sun<unk> reen.<unk> s are the fastest growing type of cancer in the United States.<unk>  represents the most commonly diagnosed malignancy, surpassing lung, breast, colorectal and prostate cancer. More than 1 million Americans will be diagnosed with<unk>  in 2007.
Skin cancer
Cancer
Oral cancer
Bone cancer
Breast cancer
Melanosis
Dermatitis
Inflammatory dermatoses