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Digestive Diseases and Sciences
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28-09-2024 | Magnetic Resonance Cholangio Pancreatography | Original Article

Diagnostic Yield of Endoscopic Ultrasound in Common Bile Duct Dilation: A Real Breakthrough

Authors: A. I. Ferreira, S. Xavier, F. Dias de Castro, J. Magalhães, S. Leite, J. Cotter

Published in: Digestive Diseases and Sciences | Issue 11/2024

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Abstract

Background

Endoscopic ultrasound (EUS) is important for the evaluation of patients with common bile duct (CBD) dilation.

Aims

The purpose of this study was to evaluate the diagnostic performance of EUS for CBD dilation in patients with negative initial studies.

Methods

This was a retrospective cohort study that included patients who underwent EUS for CBD dilation (≥ 7 mm if intact anatomy or ≥ 10 mm if prior cholecystectomy) in the absence of pathology on previous ultrasonography (US), computed tomography (CT), and/or magnetic resonance cholangiopancreatography (MRCP).

Results

A total of 109 patients were included, among whom 41 had a positive EUS: 33 choledocholithiasis (30.3%), 6 chronic pancreatitis (5.5%), and 2 ampullary cancer (1.8%). If the EUS was negative, no pathology was found during 1-year follow-up. Older age was associated with positive EUS (79 versus 71 years, p = 0.030). Patients with jaundice, cholelithiasis, and altered liver biochemistry were 16.2 (p = 0.002), 3.1 (p = 0.024), and 2.9 (p = 0.009) times more likely to have positive EUS, respectively. A total of 53 patients had a negative MRCP (48.6%); those with biliary abdominal pain and jaundice were 15.5 (p < 0.001) and 20.0 (p = 0.007) times more likely to have positive EUS, respectively. Considering asymptomatic patients with normal liver tests, CBD diameter ≥ 10 mm in US and ≥ 11 mm in CT can predict a positive EUS (AUC 0.754, p = 0.047 and AUC 0.734, p = 0.048).

Conclusions

EUS is a useful diagnostic method for patients with unexplained CBD dilation, even if negative MRCP, and especially in patients with older age, abdominal pain, jaundice, cholelithiasis, and/or altered liver biochemistry. CBD diameter in US and CT had a moderate discriminative ability in predicting positive EUS in asymptomatic patients without altered liver biochemistry.
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Metadata
Title
Diagnostic Yield of Endoscopic Ultrasound in Common Bile Duct Dilation: A Real Breakthrough
Authors
A. I. Ferreira
S. Xavier
F. Dias de Castro
J. Magalhães
S. Leite
J. Cotter
Publication date
28-09-2024

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