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Related Experiment Videos

Bochdalek hernia: prevalence and CT characteristics.

M E Gale

    Radiology
    |August 1, 1985
    PubMed
    Summary

    Bochdalek hernias are common in asymptomatic adults, found in 6% of patients via CT scans. Contrary to belief, left-sided hernias are only twice as common as right-sided ones.

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    Area of Science:

    • Radiology
    • Anatomy
    • Congenital Anomalies

    Background:

    • Bochdalek hernias are congenital anomalies.
    • Previous estimates suggested a low prevalence in adults.
    • A common belief is that left-sided Bochdalek hernias are nine times more frequent than right-sided ones.

    Purpose of the Study:

    • Determine the prevalence of Bochdalek hernias in adults.
    • Evaluate the ratio of left-sided to right-sided Bochdalek hernias.
    • Assess the detectability of Bochdalek hernias on routine CT scans.

    Main Methods:

    • Retrospective review of 940 chest and abdominal CT scans.
    • Identification and counting of Bochdalek hernias.
    • Comparison of left-sided versus right-sided hernia occurrences.

    Main Results:

    • Sixty Bochdalek hernias were identified in 52 patients, a prevalence of 6%.
    • This prevalence is over 100 times higher than previously reported.
    • Left-sided hernias occurred approximately twice as often as right-sided hernias.

    Conclusions:

    • Bochdalek hernias are a more common congenital anomaly in asymptomatic adults than previously recognized.
    • Routine chest and abdominal CT scans can frequently identify Bochdalek hernias.
    • The left-to-right ratio is approximately 2:1, not the widely cited 9:1.

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