Lung cancer is the most lethal cancer in the United States. According to the National Cancer Institute, lung cancer causes more than 150,000 deaths annually and has a survival rate of 16 percent. More Americans die of lung cancer each year than of cervical, breast, colon and prostate cancers combined. Currently, cancer screening - checking people for cancers or pre-cancers before symptoms appear - is widely supported for breast (mammography), colorectal (colonoscopy and other techniques) and cervical (Pap smears) cancers...
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