Nasopharyngeal carcinoma

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Causes

By Mayo Clinic staff

Cancer begins when one or more genetic mutations cause normal cells to grow out of control, invade surrounding structures and eventually spread (metastasize) to other parts of the body. In nasopharyngeal carcinomas, this process begins in the squamous cells that line the surface of the nasopharynx.

Exactly what causes the gene mutations that lead to nasopharyngeal carcinoma isn't known, though risk factors, such as the Epstein-Barr virus, that increase the risk of this cancer have been identified. However, it isn't clear why some people with all the risk factors never develop cancer, while others who have no apparent risk factors do.

DS00756

July 12, 2008

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