Colorectal Cancer Screening Guidelines

Rationale and Recommendations

The American College of Physicians recommends colorectal cancer screening for average-risk adults, starting at age 50 and continuing through age 75, as it reduces both cancer-specific mortality and advanced cancer incidence, with strong evidence supporting screening (strong recommendation, moderate-quality evidence) 1, 2
For adults aged 50-75 years, the American College of Physicians recommends offering screening with colonoscopy every 10 years or annual fecal immunochemical test (FIT) as first-tier options (strong recommendation, moderate-quality evidence) 1, 3, 4
The American College of Physicians suggests individualizing screening decisions for adults aged 76-85 years, based on life expectancy, prior screening history, and overall health status (qualified recommendation) 5, 2, 3
For adults older than 85 years, the American College of Physicians recommends discontinuing screening (qualified recommendation) 5

The American College of Physicians recommends colonoscopy every 10 years or annual FIT as first-tier options, as both demonstrate CRC mortality reduction (strong recommendation, moderate-quality evidence) 1, 4
The American College of Physicians suggests using FIT as a screening modality for elderly patients who decline or cannot tolerate colonoscopy, due to its lower procedural risks (moderate-quality evidence) 3
The American College of Physicians recommends CT colonography every 5 years, FIT-DNA every 3 years, or flexible sigmoidoscopy every 5-10 years as second-tier options (moderate-quality evidence) 1, 7

The American College of Physicians recommends against performing single-panel guaiac FOBT during digital rectal examination, due to its low sensitivity (moderate-quality evidence) 4
The American College of Physicians recommends that all positive stool-based tests require follow-up colonoscopy for diagnostic evaluation (strong recommendation, moderate-quality evidence) 2, 3
The American College of Physicians suggests assessing comorbidities and functional status before proceeding with screening, as patients with serious conditions reducing life expectancy below 10 years are unlikely to benefit (moderate-quality evidence) 5, 3
The American College of Physicians recommends considering beginning screening at age 45 for African American patients, due to their higher CRC incidence and worse survival rates (moderate-quality evidence) 3, 4