Surgery The treatment of choice for an 8 mm retained common bile duct (CBD) stone is: A Laparoscopic CBD exploration B Percutaneous stone extraction C Endoscopic stone extraction D Extracorporeal shock wave lithotripsy 💡 Explanation The treatment of choice for an 8 mm retained common bile duct (CBD) stone is: ✓ Correct Answer: C. Endoscopic stone extraction