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Centers for Disease Control and Prevention Division of Cancer Prevention and Control 4770 Buford Hwy, NE MS K-64 Atlanta, GA 30341-3717 Call: 1 (800) CDC-INFO TTY: 1 (888) 232-6348 FAX: (770) 488-4760 E-mail: cdcinfo@cdc.gov Submit a Question Online |
ScreeningScreening means testing for a disease when there are no symptoms or history of that disease. Doctors give a screening test to find a disease early on, when treatment may work better. Scientists have studied several types of screening tests for lung cancer. A review of these studies by experts shows that more information is needed (U.S. Preventive Services Task Force Recommendations). It is not known if these tests can help prevent deaths from lung cancer. 1 Examples of screening tests for lung cancer include:
There is fair evidence that low-dose CAT scans, chest x-rays, and sputum cytology can find cancers earlier than they would be found without screening. There is little evidence that these screening tests actually prevent people from dying from lung cancer. 1 Screening also has its downside. Screening tests may find spots (abnormalities) in the lungs that are not cancers. However, a screening test does not always show the difference between cancers and other abnormalities that are not cancers. More tests may be needed to find out if the spot is a cancer. These tests might include removing a small piece of lung tissue for more testing (biopsy). This means that some people might have a surgical procedure even though they don't have cancer. These procedures have risks associated with them. They also can cause anxiety and cost money. Experts do not know if the benefits of screening outweigh the potential harms. For these reasons, experts do not currently recommend for or against lung cancer screening. Screening for lung cancer with chest x-rays was once promoted by some experts, but researchers found out that people who were screened did not have a lower death rate than people who were not screened. Studies are underway that will help provide more information about the effectiveness of more modern screening tests. To learn more, visit the National Lung Screening Trial and the Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial.1 3 References
Page last reviewed: December 7, 2007
Page last updated: December 7, 2007 Content source: Division of Cancer Prevention and Control, National Center for Chronic Disease Prevention and Health Promotion |
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