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Erschienen in: Surgical Endoscopy 4/2021

30.04.2020

Tip-in endoscopic mucosal resection for large colorectal sessile polyps

verfasst von: Yoshinori Sato, Shun-ichiro Ozawa, Hiroshi Yasuda, Masaki Kato, Hirofumi Kiyokawa, Masaki Yamashita, Yasumasa Matsuo, Hiroyuki Yamamoto, Fumio Itoh

Erschienen in: Surgical Endoscopy | Ausgabe 4/2021

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Abstract

Background

Tip-in endoscopic mucosal resection (EMR) is a modified EMR technique using which en bloc resection of large colorectal sessile polyps can be performed; however, its usefulness for colorectal sessile polyps of > 20 mm has not been reported. This study examined treatment outcomes of tip-in and conventional EMR for large colorectal sessile polyps of ≥ 20 mm.

Methods

This was a retrospective case–control study conducted at a single tertiary center in Japan. Subjects included those with large colorectal sessile polyps of ≥ 20 mm, excluding pedunculated-type polyps, who underwent endoscopic resection between January 2010 and January 2019. The primary outcome was endoscopic treatment outcomes when using tip-in and conventional EMR, and the secondary outcome was the local recurrence rate after endoscopic treatment.

Results

Forty-three colorectal lesions were treated using tip-in EMR and 83 using conventional EMR. Tip-in EMR had a significantly higher en bloc resection rate (90.7% vs. 69.8.%), and significantly shorter treatment duration (6.64 ± 0.64 min vs. 10.47 ± 0.81 min) than conventional EMR. However, for lesions > 30 mm, en bloc resection rate was 50.0% and 52.6% for tip-in and conventional EMR, respectively, indicating no significant difference. Perforation rates with tip-in and conventional EMR were 4.6% and 3.6%, respectively, indicating no significant difference. Local recurrence was examined in 80 cases who were followed up for > 6 months after endoscopic resection; recurrence rate was 0% and 7.0% in tip-in and conventional EMR cases, respectively, without significance difference.

Conclusions

Tip-in EMR showed high en-block resection rate, particularly in polyps of < 30 mm, and no residual tumor was found. This technique is a potential endoscopic treatment alternative for large colorectal sessile polyps of ≥ 20 mm.
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Metadaten
Titel
Tip-in endoscopic mucosal resection for large colorectal sessile polyps
verfasst von
Yoshinori Sato
Shun-ichiro Ozawa
Hiroshi Yasuda
Masaki Kato
Hirofumi Kiyokawa
Masaki Yamashita
Yasumasa Matsuo
Hiroyuki Yamamoto
Fumio Itoh
Publikationsdatum
30.04.2020
Verlag
Springer US
Erschienen in
Surgical Endoscopy / Ausgabe 4/2021
Print ISSN: 0930-2794
Elektronische ISSN: 1432-2218
DOI
https://doi.org/10.1007/s00464-020-07581-w

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