Definition of Choledocholithiasis
Choledocholithiasis is the presence of stones (calculi) in the common bile duct (CBD), which occurs in approximately 10-20% of patients with gallstone disease and represents a potentially life-threatening condition requiring intervention due to risk of obstructive jaundice, cholangitis, acute pancreatitis, and secondary biliary cirrhosis 1.
Clinical Significance and Pathophysiology
The condition develops when gallstones—most commonly formed initially in the gallbladder—migrate into and obstruct the common bile duct 2. This biliary obstruction creates stasis of bile flow, which can lead to:
- Obstructive jaundice from impaired bile drainage
- Acute cholangitis when bacterial infection develops in the stagnant bile
- Acute pancreatitis if stones obstruct the ampulla of Vater
- Secondary biliary cirrhosis with chronic untreated obstruction
Epidemiology
The prevalence data are consistent across guidelines:
- Affects 10-15% of the adult U.S. population with gallstones 1
- CBD stones are present in approximately 10% of those with gallstone disease 1
- Even asymptomatic choledocholithiasis requires intervention given the serious complications 1
Key Clinical Point
This is not a benign finding—acute biliary obstruction from choledocholithiasis is potentially life-threatening and requires biliary decompression in nearly all cases, though initial medical management to stabilize hemodynamic status and treat infection should precede definitive intervention 1.
The diagnosis is confirmed through advanced imaging (MRCP, ERCP) rather than clinical presentation alone, as elevation of liver enzymes and bilirubin levels alone are insufficient to identify patients with choledocholithiasis 3.