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Related Concept Videos

Endoscopic Procedures V: ERCP01:26

Endoscopic Procedures V: ERCP

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Endoscopic Retrograde Cholangiopancreatography (ERCP) is a diagnostic procedure that combines endoscopy and fluoroscopy to diagnose and treat conditions related to the bile ducts, pancreatic ducts, and gallbladder. This procedure is beneficial for identifying and addressing blockages, gallstones, strictures, and tumors within the biliary or pancreatic systems. ERCP is both diagnostic and therapeutic, offering the ability to visualize and treat identified problems in one session.
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Surgical interventions for inflammatory bowel disease (IBD), which includes ulcerative colitis and Crohn's disease, are essential in managing symptoms and addressing complications. The selection of surgical procedures is contingent upon the specific conditions and complications that stem from these illnesses.
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Esophageal Strictures-II: Clinical Features and Management01:26

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Patients with esophageal strictures often experience a range of symptoms. Initially, they may have difficulty swallowing solid foods, which can progress to include liquids. Additional symptoms may involve chest pain or discomfort, regurgitating food and fluids, heartburn, unintentional weight loss, coughing or choking during meals, and hoarseness.
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Esophageal Strictures-I: Introduction01:30

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Esophageal strictures involve abnormal narrowing or tightening of the esophagus. They vary in length and severity, ranging from mild constriction to complete obstruction, and are classified as benign (noncancerous) or malignant (cancerous).
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Updated: Sep 17, 2025

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Endoscopic approach to indeterminate biliary strictures.

Yousuke Nakai1, Ryunosuke Hakuta1, Yutaka Shimamatsu1

  • 1Department of Internal Medicine, Institute of Gastroenterology, Tokyo Women's Medical University, Tokyo, Japan.

Clinical Endoscopy
|July 1, 2025
PubMed
Summary
This summary is machine-generated.

Diagnosing biliary strictures is difficult. Advanced endoscopic techniques like endoscopic ultrasonography and peroral cholangioscopy (POCS) offer improved diagnostic yield for indeterminate cases, but optimal use requires further study.

Keywords:
Biliary stricturesCholangioscopyEndoscopic retrograde cholangiopancreatographyEndosonography

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Area of Science:

  • Gastroenterology
  • Interventional Endoscopy
  • Diagnostic Imaging

Background:

  • Biliary stricture diagnosis is challenging due to low sensitivity of conventional endoscopic retrograde cholangiopancreatography (ERCP) sampling.
  • Indeterminate biliary strictures often require additional endoscopic procedures for definitive diagnosis.

Purpose of the Study:

  • To evaluate the diagnostic yield and optimal application of advanced endoscopic techniques for indeterminate biliary strictures.
  • To compare endoscopic ultrasonography-guided sampling and peroral cholangioscopy (POCS)-guided biopsy based on stricture location.

Main Methods:

  • Review of diagnostic modalities for indeterminate biliary strictures, including endoscopic ultrasonography-guided sampling and POCS-guided biopsy.
  • Analysis of modality selection based on stricture location (distal vs. perihilar).

Main Results:

  • Endoscopic ultrasonography is preferred for distal biliary strictures, while POCS is preferred for perihilar strictures.
  • Endoscopic ultrasonography-guided sampling shows high sensitivity with masses; POCS-guided biopsy sensitivity is unsatisfactory and prone to visual discrepancies.
  • Optimal timing (initial vs. rescue procedure) for advanced techniques remains unclear.

Conclusions:

  • Advanced endoscopic techniques improve diagnostic yield for biliary strictures, with location-specific preferences.
  • Further research is needed to clarify the cost-effectiveness and optimal role of these advanced methods in the diagnostic algorithm.