Yield of Advanced Neoplasia at Second Post-polypectomy Surveillance Colonoscopy: A Systematic Review and...

Area of Science:

• Gastroenterology
• Oncology
• Preventive Medicine

Background:

• Limited evidence exists for neoplasia risk and surveillance timing after polypectomy and initial colonoscopy.
• Routine encounters with patients post-polypectomy and surveillance colonoscopy necessitate better risk stratification.

Purpose of the Study:

• To conduct a systematic review and meta-analysis to evaluate the yield of serial surveillance colonoscopies.
• To inform risk assessment and surveillance timing for individuals with a history of polypectomy.

Main Methods:

• Systematic literature search of databases through September 2024.
• Inclusion of studies reporting neoplasia yield at baseline and at least two surveillance colonoscopies.
• Pooled analysis of advanced neoplasia rates at second surveillance based on baseline and first surveillance findings.

Main Results:

• Advanced neoplasia rates at second surveillance varied significantly based on prior findings.
• For individuals with no adenoma at baseline, advanced neoplasia rates at second surveillance ranged from 4% to 11.4% depending on first surveillance results.
• For individuals with advanced neoplasia at baseline, rates ranged from 9.1% to 26.1% at second surveillance, depending on first surveillance findings.

Conclusions:

• Results from both baseline and first surveillance colonoscopies are essential for accurate risk estimation.
• Utilizing historical colonoscopy data improves risk stratification compared to relying solely on the most recent examination.