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Laparoscopic Common Bile Duct Exploration Followed by Primary Suture Using a Modified Bile Duct Incision
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Normal Measurement of Diameters of the Common Bile Ducts in Different Aged Groups

Wichet Piyawong, Vitit Lekhavat

    Journal of the Medical Association of Thailand = Chotmaihet Thangphaet
    |June 22, 2018
    PubMed

    Insights

    The common bile duct (CBD) diameter in Thai adults increases with age, with an upper limit of 8 mm considered reasonable after age 60. This study establishes crucial reference values for normal CBD size in the Thai population.

    Area of Science:

    • Radiology
    • Gastroenterology
    • Anatomy

    Background:

    • Computed tomography (CT) is essential for diagnosing biliary disorders in adults.
    • Normal common bile duct (CBD) size data for Thai adults is currently lacking.
    • This study aims to establish reference normal measurements for CBD diameter in the Thai population.

    Purpose of the Study:

    • To determine the normal common bile duct (CBD) diameter in Thai adults.
    • To establish age-specific reference ranges for CBD diameter.
    • To provide essential data for the diagnosis of biliary disorders in Thailand.

    Main Methods:

    • Retrospective analysis of CT scans from 277 Thai adult patients.
    • CBD measurements performed on axial oblique images, perpendicular to the distal CBD's long axis.
    • Statistical analysis using ANOVA to compare CBD diameter across seven age groups.

    Main Results:

    • The mean CBD diameter across all subjects was 4.65±1.39 mm, ranging from 2.3 to 9.5 mm.
    • CBD diameter significantly increased with age (p<0.05).
    • No significant relationship was found between CBD diameter and gender.

    Conclusions:

    • CBD diameter shows a considerable age-related increase.
    • An upper limit of 8 mm for CBD diameter is suggested for patients over 60 years old.
    • These findings provide vital reference values for interpreting CBD size in the Thai population.
    Abstract

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