Flexible sigmoidoscopy screening is recommended every 4 years. Which option reflects this interval?

Flexible sigmoidoscopy screening is recommended every 4 years. Which option reflects this interval?

• A. Every 2 years
• B. Every 1 year
• C. Every 4 years
• D. Every 5 years

Answer: (C)

Flexible sigmoidoscopy is a colorectal cancer screening test that looks at the lower part of the colon, and the interval between screenings is set to balance catching problems early with avoiding unnecessary procedures. In this scenario, the guideline or standard being tested specifies a 4-year interval after routine screening, so the option that matches that timing is the best choice. Intervals that are more frequent, like every 2 years or every 1 year, would mean screening too often for average-risk individuals and increase burden without proven additional benefit. An interval of every 5 years would miss the intended spacing described here. Keep in mind that if polyps or other findings are present on a prior exam, surveillance intervals can change, but for routine screening with a normal result, 4 years is the appropriate target.

Flexible sigmoidoscopy is a colorectal cancer screening test that looks at the lower part of the colon, and the interval between screenings is set to balance catching problems early with avoiding unnecessary procedures. In this scenario, the guideline or standard being tested specifies a 4-year interval after routine screening, so the option that matches that timing is the best choice.

Intervals that are more frequent, like every 2 years or every 1 year, would mean screening too often for average-risk individuals and increase burden without proven additional benefit. An interval of every 5 years would miss the intended spacing described here. Keep in mind that if polyps or other findings are present on a prior exam, surveillance intervals can change, but for routine screening with a normal result, 4 years is the appropriate target.