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Skin Cancer
(Nonmelanoma Skin Cancer)

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What is skin cancer?

Skin cancer is a common, low-grade cancerous (malignant) growth of the skin. It starts from cells that begin as normal skin cells and transform into those with the potential to reproduce in an out-of-control manner. Unlike other cancers, the vast majority of skin cancers have no potential to spread to other parts of the body (metastasize) and threaten your life.

There are two major forms of skin cancer, basal cell carcinoma (the most common variety) and squamous cell carcinoma (the second most common type). Melanoma is also a form of skin cancer, but is far less common, though more deadly, than the other two varieties.

What are the risk factors for skin cancer?

The most common risk factors for skin cancer are:

  • Ultraviolet light exposure, either from the sun or from tanning beds. Fair-skinned individuals with a history of repeated sunburns, those with hazel or blue eyes, and people with blond or red hair are particularly vulnerable. The problem is worse in areas of high altitude or near the equator where sunlight and UV exposure are more intense.
  • Chronically-suppressed immune system (immunosuppression) from underlying diseases such as HIV infection or cancer, or from some medications such as prednisone or chemotherapy.
  • Exposure to ionizing radiation (X-rays) or chemicals known to predispose to cancer such as arsenic.
  • Certain types of wart virus infections.
  • People who have a history of one skin cancer have a 50% chance of developing a second one in the next 5 years.
Medically Reviewed by a Doctor on 2/13/2014

Source: MedicineNet.com
http://www.medicinenet.com/skin_cancer_overview/article.htm

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