Mary is 50 years old and does not believe she is at risk for breast cancer. Suggestion: Mary should have a mammogram every year.
Cancer is a disease in which cells in certain parts of the body grow and multiply out of control. Cancer cells can invade and destroy nearby healthy tissues, including organs. Cancer can start in one part of the body before it spreads to other parts of the body. This process is called transfer. When cells age or become damaged, they die and are replaced by new cells. Sometimes this orderly process is disturbed and abnormal or damaged cells multiply and multiply when they should not. These cells can form tumors, which are collections of tissues. Tumors can be cancerous or noncancerous (benign).
Cancer grows into vital organs, nerves, or blood vessels, destroying and impairing their function, and killing them. You can start with almost any human cell. New cells are usually formed by growth and division. When cells become too old or damaged, they die and are replaced by newly formed cells.
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