Is colonoscopic screening of a low-risk (normal) population ethically justifiable?

Area of Science:

• Gastroenterology
• Oncology
• Public Health

Background:

• Colorectal cancer (CRC) screening is crucial for early detection and prevention.
• Colonoscopy is a highly sensitive method for detecting CRC and precancerous lesions.
• Current screening guidelines often recommend periodic screening for average-risk populations.

Purpose of the Study:

• To summarize the arguments for and against using colonoscopy for CRC screening in a low-risk population.
• To evaluate the effectiveness and feasibility of colonoscopy compared to other screening methods.
• To identify barriers to widespread colonoscopic screening implementation.

Main Methods:

• Literature review and synthesis of existing evidence on colonoscopy efficacy and safety.
• Comparative analysis of colonoscopy with fecal occult blood test (FOBT) and sigmoidoscopy.
• Assessment of cost-effectiveness, healthcare system capacity, and public compliance factors.

Main Results:

• Colonoscopy demonstrates high sensitivity in detecting colorectal neoplasia and precursor lesions, with rare procedural side effects.
• Alternative screening methods like FOBT plus sigmoidoscopy have limitations, missing 10-15% of advanced proximal colon neoplasms.
• Significant barriers include high costs, limited healthcare system reimbursement in Europe, insufficient trained personnel, and low public compliance.

Conclusions:

• Colonoscopy is currently the most effective CRC screening procedure due to its high detection rate and safety.
• Widespread implementation requires addressing significant challenges: increasing public compliance through education and ensuring healthcare system readiness for cost coverage.
• Policy changes and public engagement are essential to promote colonoscopy as a primary screening tool.