Question

A retained stone impacted in the distal common bile duct is seen on a T-tube cholangiogram. What is the best management of the stone?

• A. Dissolution therapy
• B. Operative removal
• C. Endoscopic sphincterotomy and stone extraction
• D. No active treatment is required

Hint:

Think of the least invasive proven method for clearing a duct stone.

Answer 1

The Correct Option is C

Step 1: Understanding the Question:
A stone retained in the distal common bile duct is found on a postoperative T-tube cholangiogram after cholecystectomy, and the question asks for the best way to manage it.

Step 2: Key Concept or Approach:
Retained common bile duct stones found on a T-tube cholangiogram are best managed by the least invasive method that reliably clears them. Endoscopic retrograde cholangiopancreatography (ERCP) with sphincterotomy and stone extraction has become the standard approach because it avoids a second major operation, carries high success rates, has lower morbidity than surgery, and can be performed with the T-tube left in place. Older approaches such as dissolution therapy are slow and unreliable, while repeat operative removal carries far higher morbidity and is reserved for cases where endoscopic clearance fails or the stone is inaccessible endoscopically. Leaving the stone untreated risks cholangitis, obstructive jaundice, and pancreatitis.

Step 3: Working Through the Options:
Dissolution therapy is too slow and unpredictable to be first-line for an obstructing distal stone. Operative removal is effective but far more invasive than necessary when an endoscopic route is available, so it stays a backup option. No active treatment is unsafe, since a retained stone left in the duct predisposes to infection and biliary obstruction. Endoscopic sphincterotomy and stone extraction gives a minimally invasive, high-success clearance of the duct without another operation, making it the best choice.

Step 4: Conclusion:
The best management is endoscopic sphincterotomy and stone extraction.