Endoscopic lithotripsy for bile duct stones

Area of Science:

• Gastroenterology
• Endoscopic procedures
• Biliary tract interventions

Background:

• Endoscopic sphincterotomy and stone extraction are effective for most biliary stones.
• Large stones (> 2 cm) often necessitate advanced lithotripsy techniques.

Purpose of the Study:

• To evaluate the efficacy of different lithotripsy methods for large common bile duct stones.
• To establish an optimal treatment algorithm for managing complex biliary stones.

Main Methods:

• Review of conventional endoscopic stone extraction techniques.
• Assessment of mechanical, electrohydraulic, and laser lithotripsy (intraductal shockwave lithotripsy).
• Discussion of the role of peroral cholangioscopy and future scope development.

Main Results:

• Mechanical lithotripsy is effective in 80-90% of cases but can fail due to stone entrapment.
• Intraductal shockwave lithotripsy (electrohydraulic or laser) is successful for refractory cases.
• Combined approach achieves >95% success in experienced hands.
• Biliary stenting is an option for high-risk patients.

Conclusions:

• Mechanical lithotripsy should be the first-line treatment for large biliary stones.
• Referral to specialized centers for intraductal shockwave lithotripsy improves outcomes for challenging stones.
• Advanced endoscopic techniques, with improved instrumentation, hold promise for complex biliary stone management.