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Myocardial disarray. A critical review

A E Becker, G Caruso

    British Heart Journal
    |June 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

    Myocardial disarray is not a reliable marker for hypertrophic cardiomyopathy. Histological analysis shows disarray can occur naturally in normal hearts and be influenced by sectioning planes.

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    Area of Science:

    • Cardiovascular Pathology
    • Histology
    • Cardiac Anatomy

    Background:

    • Myocardial disarray has historically been considered a key histological feature of hypertrophic cardiomyopathy.
    • Its diagnostic specificity has been questioned due to its presence in other cardiac conditions and normal hearts.

    Purpose of the Study:

    • To investigate whether myocardial disarray is an inherent feature of normal cardiac fiber architecture.
    • To determine if sectioning orientation influences histological appearance, impacting diagnostic accuracy for hypertrophic cardiomyopathy.

    Main Methods:

    • Gross fiber dissections were performed on five normal human hearts.
    • Histological analysis was conducted on tissue blocks from different faces of five additional hearts.

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    Main Results:

    • Natural disarray was observed in multiple sites within normal hearts.
    • The plane of tissue sectioning significantly altered histological findings in the majority of samples.
    • Histological changes ranged from "normality" to "disarray" based solely on section orientation.

    Conclusions:

    • Myocardial disarray is not a specific or sensitive marker for hypertrophic cardiomyopathy.
    • The diagnostic value of myocardial disarray in clinical settings is significantly diminished.
    • Histological interpretation must account for the influence of sectioning planes on cardiac tissue.