Water-slider method reduced colonic polyp fragmentation compared with conventional suction retrieval: A prospective randomized controlled study.

Akinori Shimayoshi, Hiroki Bessho, Yasuharu Kawamoto, Shuhei Yamamoto, Jihyun Sung, Yuji Morita, Shuji Wakamatsu, Mai Horie, Yugo Kai, Risato Takeda, Kiyoshi Iwahashi, Narihiro Shibukawa, Masanori Miyazaki, Satoshi Egawa, Masahide Oshita

Journal: Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver 2022;53(6):717-721

PMID: 33478875

Full Text on Elsevier Science View on PubMed

Abstract

OBJECTIVES

After resecting colonic polyps, retrieval through the scope channel may lead to polyp fragmentation, making pathologic evaluation challenging. An easy and reliable method for complete polyp retrieval is needed.

METHODS

We developed the water-slider method (WSM), in which the resected polyp is surrounded by water from an auxiliary water channel during suctioning. We prospectively randomized patients who underwent endoscopic resection for colonic polyps in our institute into WSM and non-WSM groups, and evaluated the polyp fragmentation rate.

RESULTS

Analysis of the data regarding small polyps (≤10 mm in size) revealed that the WSM group had a significantly lower polyp fragmentation rate (8.2%) than the non-WSM group (23.8%, p < 0.001). Polyp retrieval time did not differ significantly between groups. The rate of a clear-cut end on neoplastic polyps was significantly higher in the WSM group (63.8%) than in the non-WSM group (50.0%; p = 0.029).

CONCLUSIONS

The WSM achieved a significantly lower polyp fragmentation rate, allowing for more accurate histologic evaluation than the conventional method. The WSM did not influence the polyp retrieval time.

Address: Department of Internal Medicine, Osaka Police Hospital, Kitayama-cho 10-31, Tennnoji-ku, Osaka, Osaka, Japan. Electronic address: [email protected].; Department of Gastroenterology and Hepatology, National Hospital Organization Osaka National Hospital, Osaka, Osaka, Japan.; Department of Gastroenterology and Hepatology, Osaka University Hospital, Suita, Osaka, Japan.; Department of Internal Medicine, Osaka Police Hospital, Kitayama-cho 10-31, Tennnoji-ku, Osaka, Osaka, Japan.; Department of Gastroenterology and Hepatology, Yao Municipal Hospital, Yao, Osaka, Japan.; Department of Hepatobiliary and Pancreatic Oncology, Osaka International Cancer Institute, Osaka, Osaka, Japan.

DOI: 10.1016/j.dld.2020.12.116

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MeSH Terms: Adult, Colonic Polyps, Colorectal Neoplasms, Female, Humans, Male, Middle Aged, Suction, Water