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Related Experiment Videos

Stability of malignant breast microcalcifications

A S Lev-Toaff1, S A Feig, V L Saitas

  • 1Department of Radiology, Thomas Jefferson University Hospital, Philadelphia, PA 19107.

Radiology
|July 1, 1994
PubMed
Summary

Stable malignant microcalcifications are less likely to indicate invasive ductal carcinoma. However, stability does not rule out malignancy, emphasizing the need for biopsy in suspicious cases.

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Area of Science:

  • Radiology
  • Oncology
  • Pathology

Background:

  • Microcalcifications on mammograms can be indicators of breast cancer.
  • Assessing the stability of microcalcifications is crucial for diagnosis.

Purpose of the Study:

  • To determine the frequency of stability in malignant microcalcifications.
  • To investigate the relationship between microcalcification stability and specific histologic diagnoses, particularly invasive ductal carcinoma.

Main Methods:

  • Retrospective analysis of 182 patients with malignant microcalcifications confirmed by needle-guided biopsy.
  • Mammograms were compared over time to classify microcalcifications as stable or increasing/new.
  • Histologic diagnoses were reviewed for correlation.

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Main Results:

  • 24.8% of malignant microcalcifications were stable over a mean of 25.4 months.
  • Only 12% of patients with stable microcalcifications had invasive ductal carcinoma.
  • In contrast, 37% of patients with increasing or new microcalcifications had invasive ductal carcinoma.

Conclusions:

  • Stable malignant microcalcifications are associated with a statistically significantly lower likelihood of invasive ductal carcinoma.
  • The stability of microcalcifications is not a reliable factor for excluding malignancy.
  • Biopsy remains essential for definitive diagnosis of suspicious microcalcifications.