If you have been told that a polyp was found or removed during your colonoscopy, you are in good company: polyps are common, most are harmless, and taking them out is a routine part of the exam. Even so, that small step matters a great deal, because certain polyps can slowly turn into colorectal cancer if they are left in place. Understanding what actually happens during a polyp removal can take much of the worry out of the experience.
What colon polyps are
A polyp is a small clump of cells that forms on the inner lining of the colon or rectum. Polyps vary in size and shape: some lie flat against the colon wall, while others grow on a short stalk. They rarely cause symptoms, which is exactly why screening matters; most people who have polyps feel completely well. Occasionally, a larger polyp can cause bleeding, a change in bowel habits, or abdominal discomfort.
How polyps are found and removed
During a colonoscopy, a gastroenterologist guides a slim, flexible tube tipped with a small camera through the colon and inspects the lining carefully. When a polyp is spotted, it can usually be removed during the same exam with small instruments passed through the scope; this is called a polypectomy. Patients are sedated, and the colon's lining does not sense cutting the way skin does, so the removal itself is not felt. The tissue is then sent to a laboratory, where a pathologist examines it and determines what type of polyp it was.
Why removing polyps matters
Most colorectal cancers are believed to begin as polyps that change gradually over a period of years. Removing polyps interrupts that process before a cancer has the chance to form, which is why colonoscopy is considered a preventive test and not only a diagnostic one. Current guidelines in the United States advise most adults at average risk to begin colorectal cancer screening at age 45, and people with a family history of colorectal cancer or polyps may need to start earlier. Your care team can help you sort out the timing that fits your situation.
Recovery and follow-up
Recovery after a polypectomy is usually brief. Mild bloating or cramping for a day or so is common, and most people return to their normal routine quickly by following their care team's instructions. Once the laboratory results are ready, your gastroenterologist will review them with you and recommend when your next colonoscopy should take place, based on the number, size, and type of polyps found. Keeping up with that schedule is one of the most dependable ways to protect your long-term colon health.