Not a feature of CBD stone
**Core Concept**
The gallbladder and bile ducts (CBD) have specific characteristics that distinguish them from other parts of the biliary system. Understanding these features is crucial for diagnosing and managing gallstone disease.
**Why the Correct Answer is Right**
A CBD stone, also known as a common bile duct stone, is typically a cholesterol stone that forms in the gallbladder and then migrates into the bile ducts. The correct answer is a characteristic that does not apply to CBD stones. CBD stones are usually solitary, large, and have a smooth surface. They often cause obstructive jaundice and pancreatitis.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because CBD stones can indeed cause obstructive jaundice, which is a characteristic feature of bile duct obstruction. Obstructive jaundice occurs when bile flow is blocked, leading to elevated bilirubin levels and jaundice.
* **Option B:** This option is incorrect because CBD stones are not typically multiple or fragmented. While multiple gallstones can form in the gallbladder, CBD stones are usually solitary and have a smooth surface.
* **Option C:** This option is incorrect because CBD stones can indeed cause pancreatitis, especially when they obstruct the bile duct and cause bile to flow back into the pancreas. This can lead to inflammation and damage to the pancreas.
**Clinical Pearl / High-Yield Fact**
When managing CBD stones, it's essential to remember that endoscopic retrograde cholangiopancreatography (ERCP) is a key diagnostic and therapeutic tool. ERCP can help extract the stone, relieve obstruction, and prevent complications.
**Correct Answer:** B. Multiple stones are not a feature of CBD stones.