Different Types of Colon Cancer March 04, 2019 0 509 Different Types of Colon Cancer Screening Tests: Which Is Right for Me? Colon cancer screening is the process of looking for signs of cancer or precancer in the colon and rectum before the patient notices any symptoms. When colorectal cancer is found in the early stages it is easier to treat and even curable. This is why the U.S. Preventive Services Task Force recommends regular colon cancer screening for all adults . You’re probably familiar with the colonoscopy exam, but there are actually several other methods available to screen for colorectal cancer.