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Related Experiment Video

Updated: Jul 6, 2026

Endoscopic Ultrasound-Guided Biliary Drainage: Endoscopic Ultrasound-Guided Hepaticogastrostomy in Malignant Biliary Obstruction

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Published on: March 25, 2022

Microcatheter use for difficult percutaneous biliary procedures.

Elias N Brountzos¹, Alexis D Kelekis, Nikolaos Ptohis

¹Second Department of Radiology, Athens University Medical School, Attikon University Hospital, 1 Rimini Street, 12462, Chaidari, Greece. ebrountz@med.uoa.gr

Cardiovascular and Interventional Radiology

|March 6, 2008

Summary

Performing percutaneous biliary drainage in nondilated ducts is challenging. A new technique using a microcatheter and hydrophilic wire improves success rates for these difficult cases.

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Area of Science:

Interventional Radiology
Gastroenterology
Biliary Interventions

Background:

Percutaneous biliary drainage (PBD) is crucial for managing biliary obstruction.
Procedures in patients with nondilated bile ducts present significant technical challenges.
Lower success rates are observed in nondilated duct PBD compared to dilated ducts.

Purpose of the Study:

To describe a novel method for facilitating percutaneous biliary drainage in patients with nondilated bile ducts.
To improve the success rate of PBD in challenging clinical scenarios.

Main Methods:

Utilized a 2.7-French (Fr) microcatheter.
Employed a 0.018-inch hydrophilic guidewire.
Combined microcatheter and guidewire for enhanced access and manipulation in nondilated ducts.

Main Results:

The described method facilitates PBD in nondilated ducts.
This technique is applicable to complex cases such as iatrogenic bile leaks, diffuse cholangiocarcinomas, and sclerosing cholangitis.
Implies improved procedural success in challenging PBD cases.

Conclusions:

A combined microcatheter and hydrophilic guidewire approach offers a viable solution for PBD in nondilated ducts.
This technique enhances the feasibility and potential success of PBD in difficult clinical settings.
Further studies may validate the efficacy and safety of this method.