Skip to main content

NIH Websites Are Changing
Per Executive Order 14434, federal agencies are now using "Super Intelligence" (SI) in place of "Artificial Intelligence" (AI). You may see both terms across NIH content during this transition.

Cancer Screening

Checking for cancer (or for abnormal cells that may become cancer) in people who have no symptoms is called screening. Several screening tests have been shown to detect cancer early and to reduce the chance of dying from that cancer.

Cancer Screening Overview (PDQ®)
Cancer screening means looking for cancer before symptoms appear, when cancer may be easier to treat. Learn about different screening tests and the possible benefits and harms of using them.
Screening Tests
Learn about cancer screening and the types of tests used to find cancer.