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Related Experiment Videos

Hypertrophic cardiomyopathy without asymmetric hypertrophy

T Koide, T Narita, S Sumino

    British Heart Journal
    |May 1, 1982
    PubMed
    Summary
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    Inherited hypertrophic cardiomyopathy can present atypically, challenging diagnosis based solely on gross anatomy. This case highlights the importance of histological examination for accurate identification of myocardial disorders.

    Area of Science:

    • Cardiology
    • Genetics
    • Pathology

    Background:

    • A 49-year-old female with congestive heart failure and heart block presented with clinical and echocardiographic findings suggestive of atypical dilated cardiomyopathy.
    • The patient ultimately died of cerebral embolism.

    Observation:

    • Necropsy revealed slight dilation of all cardiac chambers with normal interventricular septum and left ventricular wall thickness.
    • Histological examination showed extensive myocardial disarray, particularly in the interventricular septum.

    Findings:

    • The patient's father had similar clinical findings, and a brother had typical hypertrophic cardiomyopathy.
    • The findings suggest the patient likely had inherited hypertrophic cardiomyopathy, despite initial atypical presentation.

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    Implications:

    • This case underscores the diagnostic challenges of hypertrophic cardiomyopathy when relying solely on left ventricular gross anatomy.
    • Histological evaluation is crucial for diagnosing inherited cardiomyopathies with variable presentations.