Treatment of Choledocholithiasis with Common Bile Duct Stone Diameter Over 1.5 cm or Other Difficult Stone Features

Choledocholithiasis presenting with certain stone or anatomical characteristics constitutes a "difficult stone" scenario where standard extraction is predicted to fail and a specific management pathway applies.

Clinical Scenario

This protocol covers patients in whom one or more of the following features are identified:

Common bile duct stone diameter greater than 1.5 cm
Barrel-shaped stone
Sigmoid common bile duct
Stone located in the cystic or intrahepatic ducts
Stone impaction
Multiple common bile duct stones
Narrow distal common bile duct
Angled common bile duct

Management Approach

When these features predict that standard extraction will fail, biliary drainage is maintained with a temporary stent while the case is escalated — the full pathway is outlined in the structured protocol.

Complete intervention sequence and referral criteria available in the full protocol below.

Instant Access to Structured Evidence-Based Regimens

References

The criteria for difficult gallstones are as follows: diameter over 1.5 cm, barrel-shaped, sigmoid or located in the cystic and intrahepatic ducts, and stone impaction, as shown in Figure 8.

Predicted failed extraction by sphincterotomy + balloon and/or basket (stone size >1.5 cm, multiple stones, narrow distal CBD, angled CBD)

Insert temporary plastic stent and refer to tertiary care center or consider surgery

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