Open Access
CC BY 4.0 · Endoscopy 2025; 57(07): 740-749
DOI: 10.1055/a-2563-1606
Original article

Recurrence after piecemeal hot-snare endoscopic mucosal resection of 10–20-mm nonpedunculated colorectal polyps: a multicenter cohort study

1   Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, Netherlands
,
Yark Hazewinkel
1   Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, Netherlands
2   Department of Gastroenterology and Hepatology, Ter Gooi Hospital, Hilversum, Netherlands
,
Jochim S. Terhaar Sive Droste
3   Department of Gastroenterology and Hepatology, Jeroen Bosch Hospital, 's-Hertogenbosch, Netherlands
,
Ruud W. M. Schrauwen
4   Department of Gastroenterology and Hepatology, Hospital Bernhoven, Uden, Netherlands
,
Adriaan C. Tan
5   Department of Gastroenterology and Hepatology, Canisius Wilhelmina Hospital, Nijmegen, Netherlands
,
Parweez Koehestanie
6   Department of Gastroenterology and Hepatology, Bravis Hospital, Roosendaal, Netherlands (Ringgold ID: RIN37226)
,
Mariëtte C. A. van Kouwen
1   Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, Netherlands
,
Peter D. Siersema
7   Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center, Rotterdam, Netherlands
1   Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, Netherlands
› Author Affiliations


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Abstract

Background

Guidelines are equivocal on the need for early surveillance colonoscopy (ESC) after piecemeal endoscopic mucosal resection (pEMR) of 10–20-mm nonpedunculated colorectal polyps (NPCPs). This study assessed recurrence rates and associated factors at ESC following hot-snare pEMR of 10–20-mm NPCPs.

Methods

A retrospective, multicenter cohort study was performed at five hospitals in the Netherlands. Patients undergoing pEMR of 10–20-mm NPCPs (2014–2021) and referred for ESC (range 3–9 months) were included. The primary outcome was recurrence rate at ESC. Secondary outcomes included scar identification rates, both overall and at tattooed sites. A mixed-effects model was used to identify factors associated with recurrence.

Results

389 patients undergoing pEMR of 426 NPCPs 10–20 mm (median 15 mm, interquartile range 12.8–20.0 mm) were included. Overall, 262 scars (61.5%; 95%CI 56.8–66.0) and 81.6% of tattooed sites were identified at ESC. The recurrence rate was 35/426 (8.2%; 95%CI 6.0–11.2) overall and 35/262 (13.4%; 95%CI 9.8–18.0) when the scar was identified. Median recurrence size was 5 mm, without high grade dysplasia. No NPCP characteristics were associated with recurrence.

Conclusions

This real-world study found a substantial recurrence rate after hot-snare pEMR of NPCPs sized 10–20mm at ESC. ESC scar identification was moderate but improved with tattoo placement. Although early surveillance could be considered to avoid missing recurrence, the small recurrence size and absence of high grade dysplasia suggest that modestly extending the interval beyond that of our study may still allow timely detection of recurrences and metachronous lesions.

Supplementary Material



Publication History

Received: 27 June 2024

Accepted after revision: 14 February 2025

Accepted Manuscript online:
20 March 2025

Article published online:
19 May 2025

© 2025. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/).

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