Screening Tests: What Do They Entail?
Colorectal screening tests are designed to detect cancer or polyps. Polyps are finger-like projections that grow on the inside of the colon wall. Generally, polyps are not cancerous, but the it is believed the vast majority of colorectal cancers begin as polyps. Polyps can also be found to be precancerous. Precancerous polyps have subtle changes associated with them that increase the risk of them becoming cancerous over time.
The risk of colorectal cancer increases with age. For men with average risk, this means screening should begin at age 50 (age 45 for African Americans, American Indians/Alaska Natives). The time between tests depends on the type of test you choose to have and your underlying risk. Recommended screening tests include the following: