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Longitudinal chest x-ray changes in normal men.

R E Ensor, J L Fleg, Y C Kim

    Journal of Gerontology
    |May 1, 1983
    PubMed
    Summary
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    Aging men show significant aortic knob enlargement and increased pulmonary markings on chest x-rays over time. These age-related changes on chest imaging can mimic chronic obstructive lung disease.

    Area of Science:

    • Radiology
    • Gerontology
    • Cardiopulmonary Imaging

    Background:

    • Chest x-ray is a common imaging modality.
    • Understanding age-related changes is crucial for accurate interpretation.
    • Distinguishing normal aging from disease is a clinical challenge.

    Purpose of the Study:

    • To identify and quantify cardiovascular and pulmonary changes on chest x-rays due to aging.
    • To assess the prevalence of specific radiographic findings in healthy aging men over a decade.

    Main Methods:

    • Longitudinal study of 67 healthy men with initial and follow-up postero-anterior chest x-rays (mean 16.9 years apart).
    • Subjects aged 23-76 years at baseline.
    • Evaluation of aortic knob diameter, cardiothoracic ratio, and pulmonary structures.

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    Main Results:

    • Aortic knob diameter increased in 79% of subjects.
    • Pulmonary abnormalities like hyperinflation and increased markings doubled in prevalence.
    • Findings suggestive of chronic obstructive lung disease increased from 15% to 21% despite absence of clinical symptoms.

    Conclusions:

    • Aging leads to distinct changes in cardiovascular and pulmonary structures visible on chest x-rays.
    • These age-related radiographic findings can be misinterpreted as signs of lung disease.
    • Chest x-ray interpretation in older adults requires careful consideration of normal aging processes.