NCT00954070

Detection of Minimal Change Esophagitis Using Confocal Laser Endomicroscopy

• Status: Terminated
• Phase: —
• Study type: Observational
• Enrollment: 6 (actual)
• Sponsor: National University Hospital, Singapore · Academic / Other
• Sex: All
• Age: 21 Years – 65 Years
• Healthy volunteers: Accepted

Summary

This is an observational, prospective and pilot study to determine through confocal endomicroscopy diagnostic microscopic features detectable at the gastroesophageal junction of patients with non-erosive gastroesophageal reflux disease. The hypothesis is that minimal mucosal changes occur in non-erosive gastroesophageal reflux disease. Although these minimal changes are not always visible on white-light endoscopy, it is detectable using high-resolution confocal endomicroscopy and these confocal features are diagnostic of non-erosive reflux disease (NERD).

Detailed description

In Asia, up to 70% of patients with typical gastroesophageal reflux symptoms could have non-erosive reflux disease (NERD), in which case, no detectable mucosal break may be observed on conventional white-light endoscopy. However, minimal change lesions are often visible upon high-resolution endoscopy and on microscopic examination of biopsied specimens. The most commonly seen microscopic features are dilated intercellular space, infiltration of inflammatory cells into squamous epithelia, hyperplasia of the epithelial basal cell and elongation of the papillae. So far, the most consistent histologic change found in NERD has been the dilated intercellular space in esophageal epithelium. But until now, determinations of intercellular space dilatations could only be done ex-vivo on biopsy specimens using transmission electron microscopy or light microscopy. With the advent of high-resolution confocal laser endomicroscopy, in-vivo determination of intercellular space dilatations and other diagnostic microscopic features could be a reality. This study is aimed at exploring such a clinical possibility and feasibility, with the intention of comparing the microscopic findings based on confocal endomicroscopy with that of symptoms, and esophageal pH.

Conditions

• Gastroesophageal Reflux Disease

Interventions

Type	Name	Description
DEVICE	Confocal endomicroscope (Pentax Model EC3870K)	The intervention is an endoscopy procedure using a novel type of endoscope with a powerful confocal microscope attached to its tip. The endoscope (Pentax Model EC3870K) provides both white-light and confocal microscopic imaging.

Timeline

• Start date: 2009-08-01
• Primary completion: 2012-04-01
• Completion: 2012-04-01
• First posted: 2009-08-06
• Last updated: 2012-12-28

Locations

1 site across 1 country: Singapore