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skin cancer

(skin KAN-ser)
Cancer that forms in the tissues of the skin. There are several types of skin cancer. Skin cancer that forms in melanocytes (skin cells that make pigment) is called melanoma. Skin cancer that forms in the lower part of the epidermis (the outer layer of the skin) is called basal cell carcinoma. Skin cancer that forms in squamous cells (flat cells that form the surface of the skin) is called squamous cell carcinoma. Skin cancer that forms in neuroendocrine cells (cells that release hormones in response to signals from the nervous system) is called neuroendocrine carcinoma of the skin. Most skin cancers form in older people on parts of the body exposed to the sun or in people who have weakened immune systems.
More Information
Anatomy of the skin; drawing shows the epidermis (including the squamous cell and basal cell layers), dermis, and subcutaneous tissue. Also shown are the hair shafts, hair follicles, oil glands, lymph vessels, nerves, fatty tissue, veins, arteries, and sweat glands.Enlarge this image in new window
Anatomy of the skin showing the epidermis (including the squamous cell and basal cell layers), dermis, subcutaneous tissue, and other parts of the skin.
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