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Cold snare polypectomy: does snare type influence outcomes?

Said Din1,2, Alex J Ball1,2, Stuart A Riley1

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Summary
This summary is machine-generated.

The thin wire snare demonstrated superior endoscopic completeness for cold snare polypectomy of small polyps compared to the thick wire snare. This suggests snare type significantly impacts polyp removal effectiveness.

Keywords:
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Area of Science:

  • Gastroenterology
  • Endoscopic Procedures
  • Colorectal Cancer Prevention

Background:

  • Cold snare technique is standard for removing small colorectal polyps.
  • The impact of different snare types on cold snare polypectomy efficacy is not well-established.

Purpose of the Study:

  • To compare the effectiveness of thin wire versus thick wire mini-snares for cold snare polypectomy.
  • To evaluate the influence of snare type on complete polyp excision.

Main Methods:

  • A comparative study involving 157 polyps (3-7 mm) removed using thin wire (0.30 mm) or thick wire (0.47 mm) mini-snares.
  • Primary endpoint: endoscopic completeness of excision, assessed with chromoendoscopy.
  • Secondary endpoints: histological completeness, polyp 'fly away' rate, retrieval rate, and complications.

Main Results:

  • Significantly higher endoscopic completeness of excision with the thin wire snare (90.2%) versus the thick wire snare (73.3%).
  • Lower incidence of polyp 'fly away' with the thin wire snare (14.6% vs 35.3%).
  • No significant differences in histological completeness or polyp retrieval rates; no complications observed.

Conclusions:

  • Snare wire thickness is a critical factor influencing the completeness of small polyp removal via cold snare technique.
  • The thin wire mini-snare offers improved endoscopic excision outcomes.