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Diminutive Polyps With Advanced Histologic Features Do Not Increase Risk for Metachronous Advanced Colon Neoplasia.

Jasper L A Vleugels1, Cesare Hassan2, Carlo Senore3

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Diminutive polyps with advanced histologic features do not increase the risk of metachronous advanced neoplasia. This finding supports the Resect-and-Discard strategy for small polyps during colonoscopy surveillance.

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Area of Science:

  • Gastroenterology
  • Endoscopic imaging
  • Cancer prevention

Background:

  • Endoscopic imaging allows differentiation of diminutive polyps.
  • The Resect-and-Discard strategy removes polyps without histopathology.
  • Misclassification of polyps may lead to inappropriate surveillance intervals.

Purpose of the Study:

  • To determine the proportion of patients at high risk due to diminutive polyps with advanced histologic features.
  • To assess the risk of metachronous advanced neoplasia in these patients.

Main Methods:

  • Pooled analysis of 12 international cohorts (FIT and colonoscopy cohorts).
  • Defined high-risk patients based on polyp characteristics.
  • Calculated proportion of polyps with advanced features and associated neoplasia risk.

Main Results:

  • Advanced histologic features were found in 7.1% of FIT cohort polyps and 1.5% of colonoscopy cohort polyps.
  • High-risk patient proportions were low (0.8% FIT, 0.4% colonoscopy).
  • No significant difference in metachronous advanced neoplasia risk between high-risk and low-risk patients.

Conclusions:

  • Diminutive polyps with advanced histologic features do not elevate the risk for metachronous advanced neoplasia.
  • Findings support the safety of the Resect-and-Discard strategy for select polyps.