# Innovative Application of a Rigidizing Overtube in Endoscopic Ultrasound–Guided Biopsy for Sampling of a Cecal Submucosal Lesion

## TL;DR

A new technique using a rigidizing overtube improves endoscopic biopsy accuracy for hard-to-reach gut lesions.

## Contribution

Demonstrates a novel use of rigidizing overtube technology in endoscopic ultrasound-guided biopsy for cecal submucosal lesions.

## Key findings

- A rigidizing overtube stabilized the colonoscope during endoscopic ultrasound-guided biopsy of a cecal lesion.
- The procedure provided a benign diagnosis without requiring surgery.
- The method shows potential for safer and more accurate sampling in challenging anatomical locations.

## Abstract

Subepithelial lesions in the gastrointestinal tract present diagnostic challenges, particularly in difficult-to-access regions like the cecum. This case report describes a 71-year-old woman with a submucosal lesion adjacent to the appendix, where a rigidizing overtube was used to stabilize the colonoscope for an endoscopic ultrasound–guided fine-needle biopsy. The procedure was successful, obtaining a benign diagnosis without the need for surgery. This case highlights the utility of rigidizing overtube technology in enhancing the accuracy and safety of endoscopic interventions for subepithelial lesions, particularly in anatomically challenging locations like the cecum.