Journal
BREAST
Volume 17, Issue 2, Pages 125-131Publisher
CHURCHILL LIVINGSTONE
DOI: 10.1016/j.breast.2007.11.002
Keywords
borderline lesions; B3 lesions; magnetic resonance mammography; core needle biopsy; underestimation
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The purpose of this study is to assess whether magnetic resonance mammography (MRM) can exclude associated malignancy in case of diagnosis of borderline breast lesions (W) at core needle biopsy (CNB). Retrospective analysis of MRM findings of 79 borderline breast lesions (26 benign papillomas, 29 radial sclerosing lesions, 6 atypical ductal hyperplasias, 18 lobular neoplasias) diagnosed at CNB was performed. Lesions were classified as non-suspicious or suspicious according to Fischer score. These findings were compared to the results of histological analysis of the excisional specimens. Sensitivity, specificity, positive (PPV) and negative (NPV) predictive values of MRM in predicting the presence of malignancy were calculated. Out of 24 (30.4%) lesions classified as suspicious, 8 (33.3%) proved to be malignant and 16 (66.7%) benign. Among the 55 (69.6%) non-suspicious lesions, only 1 (1.8%) was malignant (low-grade ductal carcinoma in situ), while the remaining 54 (98.2%) proved to be benign. MRM sensitivity, specificity, PPV, and NPV were 88.9%, 77.1%, 33.3%, and 98.2%, respectively. When a borderline lesion is diagnosed on CNB, in case of mild or no enhancement at MRM, follow-up rather than excisional biopsy might be prompted. (C) 2007 Elsevier Ltd. All rights reserved.
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