“Using a highly sensitive test like a CT scan to look for early signs of lung cancer will undoubtedly result in high rates of false positives. The NLST found that 320 high-risk smokers had to be screened to prevent one lung cancer death. Because of that, and the risk from radiation from the CT scans, LeFevre stressed that the screening should only be used in the high-risk groups specified by the guidelines. What worries LeFevre and others is that some doctors and hospitals will try to profit from screening, which costs a few hundred dollars a test. ‘We hope that physicians will not use this recommendation to exaggerate the benefits of screening,’ he said.”
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