Bethesda, Md—In the context of increasing
concern about the effectiveness of screening for breast and prostate cancers,
the National Cancer Institute (NCI) is launching a $200 million study of early
lung cancer detection that should provide the kind of definitive evidence
of value (or no value) currently lacking for mammography and prostate-specific
antigen tests. The 8-year National Lung Screening Trial is designed to determine
whether annual low-dose spiral computed tomographic (CT) scans decrease the
rates of premature death from lung cancer in 50 000 smokers and former
smokers. Various studies have estimated that more than 85% of all lung cancers
are caused by smoking.
Vastag B. Lung Screening Study to Test Popular CT Scans. JAMA. 2002;288(14):1705–1706. doi:10.1001/jama.288.14.1705
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