Adenomatous polyps are growths that form on the lining of the colon or rectum. They are considered precursors to colorectal cancer, meaning they can develop into cancer over time if not removed. These polyps are usually benign, but their presence indicates a higher risk for cancer, especially if they are large or numerous. There are different types of adenomatous polyps, including tubular, tubulovillous, and villous adenomas, each varying in their potential to become cancerous. Regular screening, such as colonoscopy, is essential for early detection and removal of these polyps, helping to prevent the progression to cancer.