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Choledocholithiasis: Sensitivity and Specificity

Introduction: Stones in the common bile duct, causing obstruction of bile flow out of the liver. Consequences of this include - besides simply Extrahepatic Biliary Obstruction - Acute Pancreatitis and acute cholangitis.

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Tags: Hepatic Tag this Diagnosis.

Differential Diagnoses include: Extrahepatic Biliary Obstruction

The sensitivity and specificity of findings for Choledocholithiasis are listed below. See the left navigation bar to change the display.

Pre-Test Probability (Prevalence): %. Post-Test Probability (Predictive Value): %. Switch to display mode.
**Note that calculating probabilities from more than one finding is inherently inaccurate because findings are not independent. (For example, using two positive findings that share a common pathogenesis is likely to overestimate the true probability.)
Sensitive and Specific Findings
FindingResult SensitivitySpecificity
[ + ] Endoscopic Ultrasound + 0 - 96%95%
[ + ] MRCP + 0 - 87%95%
[ + ] Bile Duct Dilatation + 0 - 89%89%
Specific Findings
FindingResult SensitivitySpecificity
[ + ] Elevated LFTs + 0 - 46%98%
Sensitive Findings
FindingResult SensitivitySpecificity
[ + ] Bile Duct Dilatation or Any Elevated LFT + 0 - 96%78%
Poorly Diagnostic Findings
FindingResult SensitivitySpecificity
[ + ] MRCP + 0 - 40%80%