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Left ventricular bands. A normal anatomical feature.

L M Gerlis, H M Wright, N Wilson

    British Heart Journal
    |December 1, 1984
    PubMed
    Summary
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    Delicate fibromuscular structures in the left ventricle are common in hearts across all ages and species. Echocardiography confirms these findings, suggesting they are a normal anatomical variation.

    Area of Science:

    • Cardiovascular Anatomy
    • Echocardiography
    • Pathology

    Background:

    • Fibromuscular structures within the left ventricle are not well-characterized.
    • Their prevalence and clinical significance remain unclear.

    Purpose of the Study:

    • To investigate the prevalence and morphological characteristics of discrete fibromuscular structures in the left ventricle.
    • To assess the utility of echocardiography in identifying these structures.

    Main Methods:

    • Morphological examination of 686 human hearts (all ages, various conditions) and 159 animal hearts.
    • Retrospective echocardiographic review of 179 children and prospective echocardiographic study of 800 adults.

    Main Results:

    • Fibromuscular structures were identified in 48% of human hearts and 95% of animal hearts.

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  • Echocardiography detected compatible findings in 21.7% of children and 0.4% of adults.

    • Conclusions:

    • Discrete fibromuscular structures in the left ventricle are a common finding in both humans and animals.
    • These structures are likely a normal anatomical variant, with echocardiographic detection varying by age group.