American Board of Internal Medicine (ABIM) Certification Practice Exam

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What interval is advised for colonoscopies in patients with Lynch syndrome after the initial screening?

Every 1 to 3 years
Every 1 to 2 years
Every year
Every 4 years

The correct answer is: Every 1 to 2 years

For patients with Lynch syndrome, the recommended interval for colonoscopies after the initial screening is every 1 to 2 years. Lynch syndrome is associated with an increased risk of colorectal cancer, as well as other types of cancer. Due to this heightened risk, more frequent surveillance is necessary compared to the general population. The rationale for conducting colonoscopies every 1 to 2 years is grounded in the understanding that the risk of developing cancer in these patients is significantly higher, and early detection is crucial for effective management. Regular surveillance allows for the identification and removal of precancerous polyps before they can progress to cancer. While some options suggest longer intervals, such as every 4 years, this does not align with current guidelines due to the risk of cancer developing in that time frame without detection. By keeping the surveillance interval at 1 to 2 years, healthcare providers can better ensure the early identification of any malignancies and manage risks appropriately in these patients.