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Related Experiment Videos

Predicting invasion in mammographically detected microcalcification.

M J Bagnall1, A J Evans, A R Wilson

  • 1International Breast Screening Education Centre, Nottingham City Hospital, UK.

Clinical Radiology
|March 16, 2002
PubMed
Summary

High-grade ductal carcinoma in situ (DCIS) on core biopsy and numerous calcifications predict invasive breast cancer in mammographic findings. This aids in surgical planning for patients with suspicious microcalcifications.

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Area of Science:

  • Radiology
  • Oncology
  • Pathology

Background:

  • Mammographic microcalcifications can indicate malignancy, but distinguishing invasive disease from ductal carcinoma in situ (DCIS) pre-operatively is challenging.
  • Accurate pre-operative assessment of invasive breast cancer is crucial for appropriate treatment planning and surgical intervention.

Purpose of the Study:

  • To identify pre-operative factors that predict the presence of invasive breast cancer within mammographically detected malignant microcalcifications.
  • To improve the accuracy of diagnosing invasive disease in suspicious microcalcification clusters.

Main Methods:

  • Retrospective analysis of 116 stereotactic core needle biopsies (SCNBs) for malignant mammographic calcifications.
  • Correlation of final surgical pathology with pre-operative clinical, radiological, and core biopsy histology.

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  • Statistical analysis to determine predictive factors for invasive components.

    • Main Results:

    • Stereotactic core needle biopsy (SCNB) had a 55% sensitivity for detecting invasion.
    • High-grade DCIS on core biopsy and a higher number of calcifications (>40) were significant predictors of invasive carcinoma.
    • Clinical features, calcification morphology, and cluster size did not predict invasion.

    Conclusions:

    • Pre-operative identification of invasive breast cancer in DCIS diagnosed by percutaneous biopsy is feasible.
    • Patients with high-grade DCIS and numerous calcifications on core biopsy are at increased risk for invasive disease.
    • Consideration of axillary staging during therapeutic surgery is recommended for these high-risk patients.