Recurrence Rate After Endoscopic Resection of , Laterally Spreading Tumor Granular Type (LST-G) of the Colon and Rectum: Endoscopic Mucosal Resection Vs. Endoscopic Submucosal Dissection

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

282 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-11-17

Study Completion Date

2026-05-31

Brief Summary

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Colorectal cancer is one of the leading causes of cancer-related mortality worldwide. Early-stage non-polypoid neoplastic lesions, particularly Laterally Spreading Tumors - Granular Type (LST-G) larger than 20mm, require effective endoscopic removal to prevent malignant progression. The two primary techniques for resecting these lesions are Endoscopic Mucosal Resection (EMR) and Endoscopic Submucosal Dissection (ESD).

EMR is a widely used, minimally invasive technique that involves resecting the lesion with a diathermic snare after submucosal injection. While effective and safe, EMR often necessitates piecemeal resection, increasing the risk of local recurrence. In contrast, ESD, developed in Asia, allows for en bloc resection regardless of lesion size, ensuring more accurate histopathological assessment and lower recurrence rates. However, ESD requires greater technical expertise, has longer procedural times, and carries a higher risk of complications.

In Western clinical practice, EMR remains the standard treatment, whereas ESD is selectively performed in high-expertise centers. Given the lack of randomized controlled trials comparing EMR and ESD in Western populations, this study aims to provide robust clinical evidence to guide treatment decisions.

The primary objective of this study is to compare the recurrence/residual adenomatous tissue rate at 6 and 12 months between EMR and ESD in patients with LST-G lesions of the colon and rectum

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Detailed Description

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Conditions

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Colorectal Cancer

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Endoscopic Mucosal Resection (EMR)

Group Type ACTIVE_COMPARATOR

Endoscopic Mucosal Resection (EMR)

Intervention Type PROCEDURE

atients assigned to this arm will undergo Endoscopic Mucosal Resection (EMR), a standard endoscopic technique that involves the resection of colorectal Laterally Spreading Tumors - Granular type (LST-G) using a diathermic snare with submucosal injection. The procedure may be performed en bloc or in a piecemeal fashion, depending on lesion size and characteristics. EMR is widely accepted for lesions with low submucosal invasion risk but has a higher recurrence rate than ESD.

Endoscopic Submucosal Dissection (ESD)

Group Type EXPERIMENTAL

Endoscopic Submucosal Dissection (ESD)

Intervention Type PROCEDURE

Patients assigned to this arm will undergo Endoscopic Submucosal Dissection (ESD), an advanced endoscopic technique that allows for en bloc resection of large colorectal Laterally Spreading Tumors - Granular type (LST-G). The procedure involves the use of specialized knives to dissect the submucosal layer, ensuring complete resection with histologically clear margins (R0 resection). ESD has been associated with lower recurrence rates but requires a high level of expertise, longer procedural times, and carries a higher risk of complications.

Interventions

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Endoscopic Mucosal Resection (EMR)

atients assigned to this arm will undergo Endoscopic Mucosal Resection (EMR), a standard endoscopic technique that involves the resection of colorectal Laterally Spreading Tumors - Granular type (LST-G) using a diathermic snare with submucosal injection. The procedure may be performed en bloc or in a piecemeal fashion, depending on lesion size and characteristics. EMR is widely accepted for lesions with low submucosal invasion risk but has a higher recurrence rate than ESD.

Intervention Type PROCEDURE

Endoscopic Submucosal Dissection (ESD)

Patients assigned to this arm will undergo Endoscopic Submucosal Dissection (ESD), an advanced endoscopic technique that allows for en bloc resection of large colorectal Laterally Spreading Tumors - Granular type (LST-G). The procedure involves the use of specialized knives to dissect the submucosal layer, ensuring complete resection with histologically clear margins (R0 resection). ESD has been associated with lower recurrence rates but requires a high level of expertise, longer procedural times, and carries a higher risk of complications.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Age ≥ 18 years.
* Diagnosis of Laterally Spreading Tumor - Granular Type (LST-G) ≥ 20 mm in the colon or rectum with an indication for endoscopic resection.
* Life expectancy \> 10 years.
* Ability to understand and sign the informed consent form, demonstrating comprehension of the study and willingness to participate.

Exclusion Criteria

* Diagnosis of Laterally Spreading Tumor - Non-Granular Type (LST-NG).
* Presence of depressed areas within the lesion.
* Lesions located on a scar or anastomosis site.
* Lesions classified as Kudo Vi or Vn pattern.
* History of chronic inflammatory bowel disease (e.g., ulcerative colitis, Crohn's disease).
* Diagnosis of hereditary polyposis syndromes (e.g., familial adenomatous polyposis, Lynch syndrome).

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No