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Related Experiment Videos

How breast cancer presents.

J E Devitt

    Canadian Medical Association Journal
    |July 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Most breast cancers occur in women over 45. Patient self-exams detect most cancers, highlighting the importance of breast self-examination for early breast cancer detection.

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    Area of Science:

    • Oncology
    • Radiology
    • Surgical Practice

    Background:

    • Breast cancer is a significant health concern, particularly in older women.
    • Patient-detected cancers and physician-detected cancers often present similarly in terms of size and stage.
    • Visible clinical signs are common, underscoring the importance of physical breast examination.

    Purpose of the Study:

    • To analyze the characteristics of newly diagnosed breast cancers.
    • To evaluate the effectiveness of patient self-detection versus physician detection.
    • To assess the utility of routine breast cancer screening in women under 45.

    Main Methods:

    • Retrospective analysis of 501 new breast cancer cases.
    • Comparison of cancer detection methods (patient vs. physician).

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  • Evaluation of clinical signs, tumor characteristics, and patient demographics.

    • Main Results:

    • 87% of breast cancers were in women aged 45 or older.
    • Patients detected 83% of the cancers.
    • Dimpling was a frequent clinical sign, even with small tumors.
    • Mammography missed 27 out of 63 breast cancers.
    • Routine screening for breast cancer in women under 45 appears unjustified, except for those with a history of breast cancer.

    Conclusions:

    • Patient self-examination is crucial for early breast cancer detection.
    • Breast cancer screening in women under 45 is generally not recommended unless specific risk factors are present.
    • Clinical breast examination, including inspection and palpation for signs like dimpling, remains important.