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Related Experiment Video

Updated: Mar 29, 2026

Probe-based Confocal Laser Endomicroscopy of the Urinary Tract: The Technique

Probe-based Confocal Laser Endomicroscopy of the Urinary Tract: The Technique

Published on: January 10, 2013

Needle-based confocal laser endomicroscopy.

Marc Giovannini¹

¹Department of Gastroenterology and Endoscopy, Paoli-Calmettes Institute, Marseille, France.

Endoscopic Ultrasound

|December 9, 2015

Summary

This summary is machine-generated.

New confocal laser endomicroscopy (CLE) techniques, including pancreatic CLE (pCLE) and needle CLE (nCLE), show promise for diagnosing pancreatic masses. nCLE demonstrated high accuracy in identifying pancreatic cystic neoplasms and serous cystadenomas.

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Last Updated: Mar 29, 2026

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Area of Science:

Gastroenterology
Endoscopy
Oncology

Background:

Confocal laser endomicroscopy (CLE) offers advanced imaging capabilities.
New applications in pancreaticobiliary endoscopy, specifically pCLE and nCLE, are emerging.
Accurate diagnosis of pancreatic masses remains a clinical challenge.

Purpose of the Study:

To update on novel applications of CLE in the bile duct and pancreas.
To define the role of nCLE in diagnosing cystic and solid pancreatic masses.
To evaluate the diagnostic performance of nCLE for specific pancreatic lesions.

Main Methods:

Utilized a 19G EUS-needle with a confocal mini-probe (0.632 mm diameter).
Guided the mini-probe endosonographically into target pancreatic lesions.
Analyzed nCLE findings for epithelial structures, vascular patterns, and fluorescein leakage.

Main Results:

nCLE identified villous structures in IPMN (sensitivity 59%, specificity 100%).
Superficial vascular network on nCLE accurately diagnosed SCA (accuracy 87%).
nCLE revealed vascular leakage in adenocarcinomas and distinct patterns in neuroendocrine tumors.

Conclusions:

nCLE is feasible and shows encouraging preliminary results for pancreatic mass diagnosis.
nCLE may complement EUS-FNA in cases with inconclusive findings.
Specific nCLE features correlate with histological subtypes of pancreatic neoplasms.