Cancer is a tragic death it is called a silence diseases. A person with cancer illnes dies slowly, little by little. The cancer is one of the principal cause of death in the world. Cancer is a transformation of a normal cell into a tumor cell, is a multistage process and usually involves the progression of a precanceour lesion to a malignant tumor. There are genetic factors that cause cancer, physical carcinogens such as ultraviolet and ionizing radiation. Another factor is the chemical carcinogen, such as asbestos, components of snuff smoke, aflatoxin (food contaminant) arsenic (contaminant drinking water); and the biological carcinogen such as infections caused by certain viruses, bacterias or parasites. There are many people that dies because of a disease. Some of them do not realize they have cancer because they do not go to medical appointments. In men, the most frequently diagnosed cancers are in lungs, prostate, colon and rectum, stomach or in the liver. Compare to women, cancer is more reflected in their breast, colon and rectum, lung cervix and stomach. To prevent cancer, it is necessary to visit a doctor, ones you have more than forty years and/or if you are felling any pain. Always to ensure there is no risk in have any type of cancer disease.
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| Lung cancer |


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