Question

Post cholecystectomy, CBD stone detected after 2 years What type of stone is it?

• A. Primary
• B. Secondary
• C. Tertiary
• D. Retained stone

Answer 1

The Correct Option is A

To determine the type of common bile duct (CBD) stone detected post-cholecystectomy, we need to consider the timing and typical classification of gallstones:

• Retained stone: A stone left in the bile duct during surgery; usually detected within 2 years post-surgery.
• Primary stone: Forms in the bile duct after surgery, typically more than 2 years later, and is often associated with bile stasis or infection.
• Secondary stone: Originate in the gallbladder and migrate to the bile duct. Typically associated with stones discovered soon after surgery.
• Tertiary stone: No standard category; usually refers to stones arising due to reformation long after the initial operation.

The detected stone 2 years post-cholecystectomy is best classified as a Primary stone since it has formed de novo in the CBD after removal of the gallbladder, often due to factors like bile stasis or cholangitis.