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Related Experiment Videos

Physicians' abilities to detect lumps in silicone breast models.

S W Fletcher, M S O'Malley, L A Bunce

    JAMA
    |April 19, 1985
    PubMed
    Summary

    Physician breast lump detection rates in clinical breast exams are modest, with significant variation. Increasing search duration during examinations may improve detection of breast abnormalities.

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    Area of Science:

    • Medical Education
    • Diagnostic Accuracy
    • Oncology

    Background:

    • Clinical breast examination (CBE) is a key component of breast cancer screening.
    • Physician proficiency in detecting breast lumps during CBE is not well-established.
    • Variability in detection skills may impact patient outcomes.

    Purpose of the Study:

    • To evaluate the detection rates of breast lumps by physicians using manufactured breast models.
    • To identify factors influencing physician accuracy in detecting simulated breast abnormalities.
    • To provide insights for improving physician training and examination techniques.

    Main Methods:

    • Eighty physicians from general medicine, family medicine, general surgery, and obstetrics/gynecology participated.
    • Physicians assessed manufactured breast models containing lumps of varying sizes, hardness, and depths.
    • Data collected on detection rates, influencing factors (lump characteristics, physician specialty, training, experience), and search duration.

    Main Results:

    • The mean detection rate was 44% (8.0/18 lumps), with significant variation (17%-83%).
    • Detection was strongly influenced by lump size (87% for 1.0-cm vs. 14% for 0.3-cm) and hardness (56% for hard vs. 40% for soft).
    • Search duration was the only factor consistently associated with increased detection (r = .59).

    Conclusions:

    • Physician breast lump detection rates are modest and highly variable.
    • Lump characteristics (size, hardness) significantly affect detection accuracy.
    • Optimizing search duration during clinical breast examinations may be crucial for enhancing detection rates and improving breast cancer screening.

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