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Round atelectasis. Pathologic and pathogenetic features.

R Menzies, R Fraser

    The American Journal of Surgical Pathology
    |September 1, 1987
    PubMed
    Summary
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    Round atelectasis, a rare lung condition, is caused by visceral pleural fibrosis. This fibrosis leads to pleural buckling and collapse of adjacent lung tissue, appearing as an opacity on chest X-rays.

    Area of Science:

    • Pulmonary Medicine
    • Radiology
    • Pathology

    Background:

    • Round atelectasis is an uncommon pulmonary condition.
    • It typically presents as an asymptomatic peripheral opacity on chest roentgenograms.

    Purpose of the Study:

    • To investigate the pathological basis of round atelectasis.
    • To understand the relationship between pleural changes and lung parenchyma collapse.

    Main Methods:

    • Pathologic examination of eight cases of round atelectasis.
    • Correlation of radiographic findings with histological observations.

    Main Results:

    • All cases showed localized visceral pleural fibrosis.
    • Beneath the fibrosis, the pleura was wrinkled, folded, and invaginated into the lung.

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  • Adjacent lung parenchyma was compressed, with some cases showing interstitial fibrosis.

    • Conclusions:

    • Round atelectasis results from the contraction of visceral pleural fibrosis.
    • This contraction causes pleural buckling and collapse of the underlying lung parenchyma.