Related Experiment Video
Updated: May 12, 2026

Endoscopic Ultrasound-Guided Biliary Drainage: Endoscopic Ultrasound-Guided Hepaticogastrostomy in Malignant Biliary Obstruction
Published on: March 25, 2022
Necessity for endoscopic sphincterotomy for biliary stenting in cases of malignant biliary obstruction
Naoki Okano1, Yoshinori Igarashi, Yui Kishimoto
1Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Omori Medical Center, Tokyo, Japan. n-okano@med.toho-u.ac.jp
Abstract:
Endoscopic biliary stenting is a useful way to treat distal malignant biliary strictures that are not eligible for surgery. A 10-Fr plastic or metal stent is used for stenting. Typically, endoscopic sphincterotomy (EST) has often been carried out as a way to prevent pancreatitis after stent placement given the ease of stent insertion, but EST has flaws such as bleeding and stent migration.The present study describes the need for EST prior to stent placement.
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