This could be an early sign of more honesty where it concerns new screening tests. In the not-so-distant past, screening tests were introduced to physicians and the general public with great enthusiasm but virtually no acknowledgement of harm. Too often that information came 20 to 40 years later (think PSA and mammography), if at all. Now low-dose lung scans have just received the official blessing as a screening test from four major professional organizations, including the American Cancer Society. Here's what stands out---not only are the known harms acknowledged but so are the uncertainties.
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