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Breast microcalcifications after lumpectomy and radiation therapy
M Rebner1, D R Pennes, D D Adler
1Department of Radiology, Taubman Center, Ann Arbor, MI.
Radiology
|March 1, 1989
Summary
Microcalcifications after breast cancer surgery and radiation can be suspicious. Excisional biopsy is recommended for suspect microcalcifications to differentiate benign from malignant recurrence.
Area of Science:
- Radiology
- Oncology
- Pathology
Background:
- Breast cancer treatment often involves surgery and radiation therapy.
- Post-treatment breast changes, including calcifications, can occur.
- Differentiating benign post-treatment changes from recurrent malignancy is crucial.
Purpose of the Study:
- To evaluate the nature of microcalcifications developing after breast cancer surgery and radiation.
- To determine the specificity of mammographic features in distinguishing benign from malignant calcifications.
- To assess the diagnostic yield of reexcision for suspect microcalcifications.
Main Methods:
- Retrospective analysis of 152 breast cancer patients treated with excisional biopsy and radiation.
- Mammographic follow-up to monitor calcification development and stability.
- Reexcision and histopathological analysis of suspect microcalcifications.
Main Results:
- Seven percent (10/152) of patients developed suspect microcalcifications post-treatment.
- Reexcision revealed malignancy in 40% (4/10) of these patients.
- Mammographic appearance was insufficient to reliably distinguish benign from malignant calcifications.
- Malignant calcifications tended to appear earlier than benign ones.
Conclusions:
- Suspect microcalcifications after breast cancer surgery and radiation require careful evaluation.
- Excisional biopsy is recommended for microcalcifications unless they have a clearly benign appearance.
- Mammographic features alone cannot exclude recurrent malignancy in post-treatment calcifications.