Underwater polypectomy without submucosal injection for colorectal lesions ≤ 20 mm in size—a multicenter retrospective observational study

A. W. Yen, A. Amato, S. Cadoni, S. Friedland, Y. H. Hsieh, Joseph Leung, M. Liggi, J. Sul, F. W. Leung

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

Background: Underwater polypectomy (UWP) of large (≥ 20 mm) colorectal lesions is well described, but reports of UWP for lesions ≤ 20 mm in size, which account for > 95% of polyps encountered in routine clinical practice, are limited. We assessed the feasibility of UWP in routine practice across various sites for colorectal lesions ≤ 20 mm in size. Methods: A multicenter retrospective study was performed on pooled data from nine colonoscopists at 3 U.S., 1 Taiwanese and 2 Italian sites. Outcomes related to UWP on lesions ≤ 20 mm in size were analyzed. Results: In 117 patients, UWP netted 169 lesions. Polypectomy by hot (HSP, 54%) or cold (CSP, 41%) snare, and cold forceps (CFP, 5%) were performed successfully without endoscopic evidence of residual neoplasia or immediate clinically significant adverse events. The majority (74.6%) were tubular adenomas; 60.9% were from the proximal colon. Histopathologic margins were positive in 4 and unavailable in 26 CSP and 24 HSP specimens. The remainder had negative resection margins on pathologic reports. Conclusion: UWP for colorectal lesions ≤ 20 mm in routine practice across multiple sites confirms the feasibility and acceptability of this technique. Improvement of resection outcomes by UWP in routine practice deserves further evaluation in a randomized controlled trial.

Original languageEnglish (US)
JournalSurgical Endoscopy
DOIs
StateAccepted/In press - Jan 1 2018

Keywords

  • Polypectomy
  • Underwater
  • Water exchange colonoscopy

ASJC Scopus subject areas

  • Surgery

Fingerprint Dive into the research topics of 'Underwater polypectomy without submucosal injection for colorectal lesions ≤ 20 mm in size—a multicenter retrospective observational study'. Together they form a unique fingerprint.

  • Cite this