Progress in the endoscopic management of benign biliary strictures

Area of Science:

• Gastroenterology
• Hepatology
• Interventional Endoscopy

Background:

• Benign biliary strictures present diagnostic and therapeutic challenges.
• Differentiating benign from malignant strictures is difficult despite advanced imaging.
• Current tissue diagnosis methods like cytology and biopsy during ERCP have low sensitivity.

Purpose of the Study:

• To evaluate the efficacy of endoscopic therapy for benign biliary strictures.
• To highlight the diagnostic limitations in differentiating benign from malignant strictures.
• To discuss the role of endoscopic therapy in specific conditions like post-operative strictures and primary sclerosing cholangitis.

Main Methods:

• Review of endoscopic therapy outcomes for various benign biliary strictures.
• Discussion of advanced imaging techniques (EUS, MRI) for stricture differentiation.
• Analysis of treatment success rates and challenges in specific patient cohorts.

Main Results:

• Endoscopic therapy is effective in 70-90% of post-operative biliary strictures, including liver transplant cases.
• Successful symptomatic, biochemical, and cholangiographic response observed in patients.
• Strictures from chronic pancreatitis show resistance to standard endoscopic therapy, with metallic endoprostheses showing variable success.

Conclusions:

• Endoscopic therapy is a viable treatment for many benign biliary strictures.
• Accurate differentiation between benign and malignant strictures requires further diagnostic advancements.
• Management of complex biliary strictures necessitates a multidisciplinary approach in specialized centers.