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Pap tests detect abnormal cervical cells, including precancerous cervical lesions, as well as early cervical cancers. HPV tests detect HPV infections that can cause cervical cell abnormalities. Learn how Pap and HPV tests are done, how often testing should be done, and how are HPV test results are reported.

A fact sheet that describes the PSA screening test for prostate cancer and explains the benefits and limitations of the test.

A fact sheet that discusses the advantages and disadvantages of several colorectal cancer screening tests.

A fact sheet that describes the CT scan procedure and technology and its uses in screening, diagnosis, and treatment.

A fact sheet that defines screening and diagnostic mammograms; discusses the benefits and potential harms of screening mammography; and summarizes how findings, including breast density, are reported.

A fact sheet that defines tumor markers and describes how they can be used to aid diagnosis and treatment.

Oral cavity, pharyngeal, and laryngeal cancer screening means looking for cancer before there are symptoms. Currently, no standard or routine screening has shown to help reduce deaths from these types of cancer. Learn more in this expert-reviewed summary.

Testicular cancer screening has not been shown to decrease the chance of dying from the disease. It is usually found by men themselves or during a regular physical exam. Learn more about testicular cancer screening in this expert-reviewed summary.

Cancer screening means looking for cancer before symptoms appear, when cancer may be easier to treat. Screening tests can help reduce the risk of dying from some cancers, but all tests have potential risks, too. Learn more about cancer screening and available tests in this expert-reviewed summary.

Levels of Evidence for Cancer Screening and Prevention Studies explains how to weigh the strength of the evidence obtained in cited research studies. Get detailed information on this formal ranking system in this summary for clinicians.