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External Validation of Different Scoring Systems for Suspected Choledocholithiasis.

Nicolò Tamini1, Davide Paolo Bernasconi2, Luca Gianotti3

  • 1Department of Surgery, School of Medicine and Surgery, Milano-Bicocca University, San Gerardo Hospital, Monza, Italy.

Digestive Surgery
|January 14, 2019
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Summary

Diagnosing common bile duct stones is difficult. While some scoring systems show promise for identifying low-risk patients, current tools lack the overall accuracy for routine clinical use in choledocholithiasis diagnosis.

Keywords:
Bile ductCholedocholithiasisScoring systemStoneValidation

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Area of Science:

  • Gastroenterology
  • Hepatobiliary Surgery
  • Diagnostic Accuracy Studies

Background:

  • Choledocholithiasis diagnosis presents significant clinical challenges.
  • Existing scoring systems aim to stratify risk but require validation.
  • Accurate diagnosis is crucial for appropriate patient management and treatment selection.

Purpose of the Study:

  • To evaluate the diagnostic performance of previously published scoring systems for choledocholithiasis.
  • To compare the accuracy of six distinct scoring systems in a real-world patient cohort.

Main Methods:

  • Retrospective analysis of 200 patients admitted between 2013-2015 with suspected bile duct stones.
  • Application of six established scoring systems to patient data.
  • Calculation of sensitivity, specificity, predictive values, Youden index, and AUC for each scoring system.

Main Results:

  • Menezes' and Telem's scores demonstrated high sensitivity (96.6%) and specificity (99.3%), respectively.
  • Telem's and Menezes' scores yielded the best positive (75.0%) and negative (96.4%) predictive values.
  • Soltan's scoring system achieved the highest accuracy, indicated by the Youden index (0.628) and AUC (0.88).

Conclusions:

  • Current scoring systems are effective in identifying patients with a very low risk of common bile duct stones.
  • Overall, the diagnostic accuracy of these systems is insufficient for routine clinical application in choledocholithiasis.
  • Further refinement or development of diagnostic tools is warranted for improved clinical utility.