Lung Cancer
Lung cancer has been found to be the leading cancer killer in both men and women. More people die of lung cancer than of colon, breast, and prostate cancers combined. It has been estimated that 154,900 Americans will die from lung cancer in 2002; this is 28% of all cancer deaths. Lung cancer is an uncontrolled growth of abnormal cells in one or even both of the lungs. Normal lung tissue cells reproduce and develop into healthy lung tissue. The abnormal cells reproduce rapidly and do not ever grow into normal lung tissue. Clusters of cancerous cells, also known as tumors, form and disrupt the lung, which makes it hard for it to function correctly. Most lung cancers start in the lining of the bronchi, but it is also possible for it to start in other places such as, the trachea, bronchioles, or alveoli. Lung cancer often takes many years to develop. Once it does develop, the cancer cells can break away and spread to other parts of the body, which is why it is......
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