| ulceration |
The development of a lesion of the skin or a mucous membrane such as the one lining the stomach or duodenum that is accompanied by formation of pus and necrosis of surrounding tissue, usually resulting from inflammation or ischemia. Ultraviolet (UV) radiation: Invisible rays from the sun. UV radiation can burn the skin and cause melanoma and other types of skin cancer. UV radiation that reaches the earth's surface is made up of two types of rays: UVA and UVB. ...
Ãâó: www.melanoma.com/melanoma/glossary/glossary.jsp
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