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Related Experiment Videos

Strong acoustical shadowing from the gallbladder bed: ultrasonic-pathologic correlation

J J Cunningham, E L Carswell

    Gastrointestinal Radiology
    |January 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

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    Ultrasonic findings previously indicating gallstones often do not. This study found that gallbladder nonvisualization with shadowing, the WES triad, did not reliably predict gallstones or gallbladder contraction in patients.

    Area of Science:

    • Radiology
    • Gastroenterology
    • Medical Imaging

    Background:

    • The WES triad (Wall echo shadow) on ultrasonography is traditionally associated with a contracted gallbladder filled with stones.
    • This study investigates the diagnostic accuracy of the WES triad in a specific patient cohort.

    Purpose of the Study:

    • To evaluate the reliability of the WES triad in predicting gallstones and gallbladder characteristics.
    • To determine the correlation between the WES triad and gallbladder volume, wall thickness, and stone burden.

    Main Methods:

    • Retrospective review of 25 patients with specific ultrasonographic findings (gallbladder nonvisualization, high-amplitude echoes, acoustical shadowing).
    • Analysis of gallbladder size, wall thickness, and presence/absence of gallstones.

    Related Experiment Videos

  • Assessment of WES triad presence and its correlation with clinical and imaging findings.

    • Main Results:

    • None of the 25 patients had gallstones, despite the classic WES triad findings.
    • Gallbladder volume was normal or enlarged in most patients, contradicting the 'contracted gallbladder' assumption.
    • Gallbladder wall thickness was normal or only slightly thickened in 20 out of 25 patients.
    • The WES triad was present in 14 patients but did not correlate with stone size/number, gallbladder volume, or wall thickness.

    Conclusions:

    • The WES triad is not a reliable indicator of gallstones or gallbladder contraction.
    • Relying solely on the WES triad for diagnosing gallstones can lead to misinterpretation.
    • Further investigation is needed to understand the etiology of these ultrasonographic findings in the absence of gallstones.