Colorectal cancer is commonly diagnosed when having a colon cancer screening. A colonoscopy is the most commonly performed, precise, and complete test for finding colorectal cancer. Further exams, such as flexible sigmoidoscopy, virtual colonoscopy, double-contrast barium enema, and stool tests, could also be conducted as part of colon cancer screening. Your Gastroenterology Associates of Florida provider can recommend the best method of screening and diagnosis for your health and needs.