Screening can help identify cancers at early stages. Good<unk>  would not be more likely to cause harm than to provide useful information. In general,<unk>  has risks and should not be done except with a medical indication. Different kinds of<unk>  procedures have different risks, but good tests share some characteristics. If a test detects cancer, then that test result should also lead to options for treatment. Good tests come with a patient explanation of why that person has high enough risk of cancer to justify the test. Part of the testing experience is for the health care provider to explain how common false positive results are so that the patient can understand the context of their results. If multiple tests are available, then a screening test should be presented along with other options.
Cancer screening
Breast cancer screening
Lung cancer screening
Prostate cancer screening
Cervical screening
Cardiology diagnostic tests and procedures
Cancer staging
Newborn screening