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Related Concept Videos

Confocal Fluorescence Microscopy01:16

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Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
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Related Experiment Video

Updated: Jan 12, 2026

Probe-based Confocal Laser Endomicroscopy of the Urinary Tract: The Technique
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Probe-based confocal laser endomicroscopy: progress, challenges, and emerging applications.

Mohammed Ayyad1, Dhir Gala2, Maram Albandak3

  • 1Department of Medicine, Rutgers New Jersey Medical School, 185 S Orange Ave, Newark, NJ, 07103, USA. dr.mohammad.ayyad@gmail.com.

Surgical Endoscopy
|November 3, 2025
PubMed
Summary
This summary is machine-generated.

Probe-based confocal laser endomicroscopy (pCLE) offers real-time optical biopsies during endoscopy, improving neoplasia detection in gastrointestinal conditions. Broader adoption requires standardized training, AI integration, and further trials to reduce costs and variability.

Keywords:
Barrett’s esophagusConfocal endomicroscopyGastrointestinal imagingInflammatory bowel diseaseReal-time biopsypCLE

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Area of Science:

  • Gastroenterology
  • Medical Technology
  • Diagnostic Imaging

Background:

  • Probe-based confocal laser endomicroscopy (pCLE) provides cellular-level visualization during endoscopy.
  • This technology acts as a real-time "optical biopsy" for gastrointestinal indications.

Purpose of the Study:

  • To review the technology, diagnostic performance, clinical utility, safety, and cost-effectiveness of pCLE.
  • To synthesize current evidence on pCLE across various gastrointestinal conditions.

Main Methods:

  • A targeted narrative review of existing studies, including randomized trials, meta-analyses, and observational research.
  • Studies focused on pCLE in Barrett's esophagus, gastric intestinal metaplasia, colorectal neoplasia, IBD, and biliary strictures.
  • Outcomes assessed included diagnostic accuracy, impact on biopsy rates and patient management, safety, and cost.

Main Results:

  • pCLE significantly enhances neoplasia detection in Barrett's esophagus and improves characterization of colorectal lesions, potentially reducing unnecessary resections.
  • Pooled sensitivity and specificity for pCLE in gastric intestinal metaplasia are high (97% and 94%, respectively).
  • In IBD surveillance, pCLE identified more neoplasia with fewer biopsies, and in biliary strictures, it improved diagnostic accuracy.

Conclusions:

  • pCLE enhances endoscopic decision-making through immediate, near-histologic assessment, enabling targeted biopsies and earlier treatment.
  • Wider adoption depends on standardized training, validated interpretation criteria, and further multicenter trials.
  • Integration of AI and molecular imaging is crucial for reducing variability and costs, and expanding pCLE's clinical utility.