An intervention is a treatment or action taken to prevent or treat disease, or improve health in other ways. Many studies are being done to find ways to keep cancer from starting or recurring (coming back).
Chemoprevention is being studied in patients who have a high risk of developing cancer.
Note: Separate PDQ summaries on Oral Cancer Prevention and Lip and Oral Cavity Cancer Treatment are also available.
There is inadequate evidence to establish whether screening would result in a decrease in mortality from oral cancer.
Magnitude of Effect: No evidence of benefit or harm.
Study Design: Evidence obtained from one randomized controlled trial.
Internal Validity: Poor.
Consistency: Not applicable (N/A).
Chemoprevention is the use of substances to lower the risk of cancer, or keep it from recurring. The substances may be natural or made in the laboratory. Some chemopreventive agents are tested in people who are at high risk for a certain type of cancer. The risk may be because of a precancerous condition, family history, or lifestyle factors.
Clinical trials are taking place in many parts of the country. Check NCI's PDQ Cancer Clinical Trials Registry for cancer prevention trials that are now accepting patients.
See the NCI Web site for more information about cancer prevention.
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