Gel-immersion Endoscopic Submucosal Dissection for Superficial Colorectal Neoplasms: A Retrospective Study Comparing Conventional Endoscopic Submucosal Dissection.

ABSTRACT:

Objectives

Gel-immersion endoscopy offers benefits such as buoyancy, traction, and a clear visual field without gas insufflation. While some case reports have described colorectal gel-immersion endoscopic submucosal dissection (Gi-ESD), there have been no consecutive case series. This study aimed to clarify the usefulness of Gi-ESD.

Methods

This single-center retrospective cohort study included consecutive patients with colorectal neoplasms who underwent ESD. Gi-ESD was defined as mucosal incision and submucosal dissection performed under clear gel. The primary outcomes were en bloc and histologic R0 resection rates, whereas the secondary outcomes were procedure time, dissection speed, and adverse events.

Results

Among 260 ESD cases, 29 and 231 were in the Gi-ESD and

SUBMITTER: Yamauchi K 

PROVIDER: S-EPMC12511952 | biostudies-literature | 2026 Apr

REPOSITORIES: biostudies-literature