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Related Experiment Video

Updated: Jun 12, 2026

The Pocket-Creation Procedure of Endoscopic Submucosal Dissection for Large Rectal Laterally Spreading Tumors

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Published on: February 13, 2026

Cap-assisted endoscopic mucosal resection for colorectal polyps.

Massimo Conio¹, Sabrina Blanchi, Alessandro Repici

¹Department of Gastroenterology, General Hospital, Sanremo, Imperia, Italy. mxconio@tin.it

Diseases of the Colon and Rectum

|May 21, 2010

Summary

Cap-assisted endoscopic mucosal resection effectively treats colorectal polyps and tumors. While piecemeal resection requires close surveillance, the technique demonstrates good safety and efficacy for these lesions.

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Area of Science:

Gastroenterology
Endoscopic Surgery
Oncology

Background:

Cap-assisted endoscopic mucosal resection (EMR) is established for upper GI cancers.
Limited data exists on its use for colorectal lesions.

Purpose of the Study:

To assess the safety and efficacy of cap-assisted EMR.
To evaluate its use in treating colorectal sessile polyps and lateral spreading tumors.

Main Methods:

A retrospective review of 255 patients treated between 2000 and 2007.
Inclusion criteria: sessile polyps or lateral spreading tumors >= 20 mm.

Main Results:

146 sessile polyps and 136 lateral spreading tumors were treated.
Overall complication rate was 8.6%, with 7% intraprocedural bleeding (controlled endoscopically). No perforations occurred.
Recurrence rate was 4% after a median follow-up of 12.1 months.

Conclusions:

Cap-assisted EMR is effective for colorectal sessile polyps and lateral spreading tumors.
Piecemeal resection necessitates close endoscopic surveillance for complete lesion removal.
The technique offers a safe and effective treatment option with manageable complication rates.