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Related Experiment Videos

Tumor location and detectability in mammographic screening

E L Schmitt, B Threatt

    AJR. American Journal of Roentgenology
    |October 1, 1982
    PubMed
    Summary

    Film mammograms adequately examine the breast without visualizing ribs. Most cancers were detected, even near the film edge, indicating effective screening for breast cancer detection.

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    Area of Science:

    • Radiology
    • Oncology
    • Medical Imaging

    Background:

    • Radiologists have concerns about the adequacy of film mammograms that do not visualize the retromammary space or ribs.
    • Assessing screening mammography effectiveness is crucial for early breast cancer detection.

    Purpose of the Study:

    • To evaluate the adequacy of film mammography in detecting prevalent breast cancers.
    • To analyze cancer characteristics and detection rates in a large screening population.

    Main Methods:

    • Analysis of 79 prevalent cancers from 10,000 women undergoing screening mammography.
    • Mammograms obtained using dedicated equipment with vigorous compression, visualizing the anterior axillary fold.
    • Focus on cancers detectable on mammograms, their location, size, and histologic type.

    Main Results:

    • 76 out of 79 prevalent cancers were detectable on mammograms.
    • All cancers were visualized on the mediolateral view; 3 were missed on the craniocaudal view.
    • Detected cancers were smaller and had a higher proportion of noninvasive types compared to symptomatic cases.

    Conclusions:

    • Film mammography with vigorous compression adequately examines the breast for cancer detection, even without imaging ribs.
    • The mediolateral view is essential for visualizing cancers near the posterior edge.
    • Screening mammography detects smaller, less advanced cancers compared to clinical diagnosis.

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