An analysis of data from the National Lung Screening Trial showed that about 18% of lung cancers detected by low-dose CT scans were slow-growing tumors that would never cause illness or death. Despite these results, the American Lung Association and other medical associations said they will still follow existing guidelines recommending regular CT scans for certain long-time smokers. "It doesn't invalidate the initial study, which showed you can decrease lung cancer mortality by 20 percent," said ALA senior medical adviser Dr. Norman Edelman. The study appeared in JAMA Internal Medicine.
Study: Almost 1 in 5 lung cancer tumors won't harm patients
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