Colon Cancer Screening and Colonoscopy
A prevention-focused page explaining when men should discuss colorectal cancer screening, colonoscopy, stool tests, risk, and follow-up.
Board-certified gastroenterologist and internist
Colorectal cancer screening is one of the clearest prevention opportunities in adult health. The right screening route depends on age, symptoms, risk, family history, prior polyps, and whether a previous screening test was abnormal.
Most average-risk adults should begin colorectal cancer screening at age 45.
Adults 45 to 75 should be screened; adults 76 to 85 should make an individualized decision with their clinician.
Screening options include stool-based tests, CT colonography, flexible sigmoidoscopy, and colonoscopy.
An abnormal stool test or certain other abnormal screening results generally need colonoscopy to complete the evaluation.
Why men delay screening
Many men avoid screening because of embarrassment, prep concerns, fear of the result, cost uncertainty, or because they feel well. Screening is designed for people without symptoms, because precancerous polyps can be found and removed before they become cancer.
When colonoscopy becomes the right conversation
Colonoscopy allows the physician to examine the entire colon and remove many polyps during the same procedure. It is also commonly used after an abnormal stool-based test, flexible sigmoidoscopy, or CT colonography result.
Who may need earlier or more frequent screening
Patients with inflammatory bowel disease, prior colorectal cancer or polyps, certain inherited syndromes, or a family history of colorectal cancer may need a different screening plan. Symptoms such as rectal bleeding, black stools, unexplained anemia, or persistent bowel changes are not routine screening questions and should be evaluated clinically.
The MWI follow-through role
MWI can use education, reminders, and referral coordination to help men complete the next step. The actual screening plan should come from the clinician responsible for the patient's GI and preventive-care pathway.