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What is cancer?
Cancer is a group of many related diseases in which abnormal cells develop, divide uncontrollably and have the ability to infiltrate and destroy normal body tissue. Normally, cells grow and divide to produce more cells as they are needed to keep the body healthy. Sometimes, this orderly process goes wrong. New cells form when the body does not need them, and old cells do not die when they should. The extra cells form a mass of tissue called a growth or tumor. Not all tumors are cancerous; tumors can be benign or malignant.
Benign tumors are not cancer. They can often be removed and, in most cases, they do not come back. Cells in benign tumors do not spread to other parts of the body. Most importantly, benign tumors are rarely a threat to life. Malignant tumors are cancer. Cells in malignant tumors are abnormal and…
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