What is a typical cancer surveillance approach for individuals with Lynch syndrome starting in early adulthood?

• A. Colonoscopy commencing at age 50 with 10-year intervals.
• B. Colonoscopy beginning at 20-25 years with frequent intervals.
• C. No colorectal surveillance recommended.
• D. Colonoscopy only if symptoms develop.

Answer: (B)

Lynch syndrome requires early and frequent colorectal cancer surveillance because carries a high lifetime risk of colorectal cancer, with cancers often developing earlier and progressing faster than in the general population. This means monitoring should begin in early adulthood and be done regularly to catch cancers or pre-cancerous polyps when they are most treatable. Starting colonoscopy around ages 20 to 25 and repeating every 1 to 2 years reflects the need for vigilant screening due to rapid progression in these individuals. This stands in contrast to the general population, where screening typically starts around age 50 and intervals are longer. Waiting for symptoms or not screening would miss early cancers, so the recommended approach is colonoscopy in the early twenties with frequent follow-up.