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Related Experiment Videos

The superolateral major fissures.

A V Proto, J B Ball

    AJR. American Journal of Roentgenology
    |March 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    A specific curving contour related to the major fissure was found in 14% of normal chest X-rays. This radiographic anatomy feature, often an edge, aids in clinical diagnosis.

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    Area of Science:

    • Radiology
    • Thoracic Anatomy
    • Medical Imaging

    Background:

    • The major fissure is a key anatomical landmark in the lungs.
    • Radiographic identification of fissures can be challenging.
    • Understanding normal anatomical variations is crucial for accurate diagnosis.

    Purpose of the Study:

    • To identify and characterize a specific curving contour related to the major fissure on posteroanterior chest radiographs.
    • To determine the prevalence and laterality of this contour.
    • To explore the mechanism of its formation and clinical utility.

    Main Methods:

    • Review of over 1,000 posteroanterior chest X-ray views of normal adult subjects.
    • Systematic identification and documentation of a specific curving contour.

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  • Analysis of the contour's appearance (edge vs. line) and location (right, left, or both).

    • Main Results:

    • A curving contour related to the major fissure was identified in 14% of normal chest X-rays.
    • The contour was more frequently observed as an edge than a distinct line.
    • Unilateral presence: 4% right, 6% left; Bilateral presence: 4%.

    Conclusions:

    • The identified curving contour is a recognizable feature of normal thoracic anatomy.
    • This finding provides evidence linking the contour to the major fissure.
    • Understanding this radiographic feature enhances diagnostic interpretation in clinical practice.