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[Stereotactic vacuum-assisted breast biopsy--success, histologic accuracy, patient acceptance and optimizing the
K C Siegmann1, A Wersebe, A Fischmann
1Abteilung Radiologische Diagnostik, Universitätsklinik Tübingen, Germany. katja.siegmann@med.uni-tuebingen.de
Purpose:
To evaluate success, histologic accuracy, patient acceptance and BI-RADS TM-correlated malignancy rate of stereotactic vacuum-assisted breast biopsies in order to optimize the indication.
Materials And Methods:
In 132 patients with mammographically detected breast lesions 166 stereotactic vacuum- assisted 11 gauge core biopsies were performed. All lesions were classified according to the BI-RADS TM categories of the ACR. Removal of the lesion was radiographically assessed as complete, representative or not representative. Patient acceptance was evaluated.
Results:
Of the 166 lesions, 54 (32.5 %) lesions were judged completely removed, 110 (66.3 %) representatively removed and 2 (1.2 %) not representatively removed. Malignancy was found in 38 (22.9 %) lesions. The rate of malignancy increased from 6.3 % (2/32) for BI-RADS TM category 3 to 16.7 % (19/114) for BI-RADS TM category 4 and increased further to 85 % (17/20) for BI-RADS TM category 5 (p < 0.001). The histology of a sufficient vacuum-assisted biopsy was underestimated in 6 (15 %) of the 40 lesions that were subsequently excised surgically. Most patients (98.5 %; 130/132) stated they would undergo a vacuum-assisted biopsy again.
Conclusion:
Vacuum-assisted breast biopsy is accurate, has a justifiable rate of histologic underestimation and is well accepted by patients. Patients with BI-RADS TM category 4 microcalcification benefit the most. Lesions of BI-RADS TM category 3 and BI-RADS TM category 5 should be biopsied only under special circumstances (family risk of breast cancer; assessment of lesions extension).
