Cancer is a group of more than 100 diseases. Anyone can get cancer and any tissue can develop into cancer. The cells that make up the normal body have genetic mechanisms to control reproduction. Cancer begins when a cell mutates (changes), loses the ability for controlled reproduction, and begins to grow and spread.
Many environmental, chemical, viral, and personal factors may contribute to the change of a cell from normal to a cancer cell. Scientists have described the series of essential genetic steps that must occur for a cell to become transformed. This complex process may occur decades before a cancer is detected.
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