Detection of colonic polyps according to insertion/withdrawal phases of colonoscopy

  • Sergio Morini
  • Cesare Hassan
  • Angelo Zullo
  • Roberto Lorenzetti
  • Marina de Matthaeis
  • Francesca Stella
  • Salvatore M.A. Campo
Original Article
First Online:
Received:
Revised:
Accepted:

Abstract

Background and aims

Issues on colonoscopy quality are crucial to reduce the advanced neoplasia miss rate of colonoscopy. Recently, a >6-min withdrawal time has been recommended. However, the relative prevalence of polyp detected during insertion and withdrawal phases of colonoscopy is unknown. Therefore, we designed this prospective, endoscopic study.

Materials and methods

Three hundred and sixty-eight patients with 396 adenomas were selected from a consecutive colonoscopic series of 1,205 cases. Detection rates of adenomas, advanced adenomas, and cancer according to withdrawal and insertion phases of colonoscopy, also subgrouping polyps for size and location, were compared.

Results

Thirty-two (74%) advanced adenomas and 21 (95%) cancers were detected during the insertion, being only 11 (26%) and one (5%) identified during withdrawal, respectively. This was mainly due to a higher detection of >10 mm polyps during insertion than during withdrawal (75% versus 25%).

Conclusions

Most advanced neoplasia are detected during the insertion. Although withdrawal time has been shown to be important, the scope insertion phase related to polyp detection should be specifically addressed.

Keywords

Colonscopy Polyp detection rate Insertion phase Withdrawal phase 
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Notes

Conflict of interest statement

None declared.

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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Sergio Morini
    • 2
  • Cesare Hassan
    • 2
  • Angelo Zullo
    • 2
  • Roberto Lorenzetti
    • 2
  • Marina de Matthaeis
    • 2
  • Francesca Stella
    • 1
  • Salvatore M.A. Campo
    • 2
  1. 1.Department of Pathological Anatomy“San Giacomo” HospitalRomeItaly
  2. 2.Gastroenterology and Digestive Endoscopy‘Nuovo Regina Margherita’ HospitalRomeItaly

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