OBJECTIVE: The purpose of this study was to evaluate the outcomes of bracketing wire placement during preoperative breast needle localization. SUBJECTS AND METHODS: We prospectively examined mammograms of 1057 consecutive lesions that had preoperative needle localization and surgical excision and classified the lesions according to Breast Imaging Reporting and Data System (BI-RADS) final assessment categories. Bracketing wires, defined as multiple wires placed to delineate the boundaries of a single lesion, were used in 103 (9.7%) of 1057 lesions. Medical records, imaging studies, and histologic findings in these 103 lesions were reviewed. RESULTS: Of 103 bracketed lesions, median lesion size was 3.5 cm (range, 1.5-9.5 cm). Ninety-three lesions (90.3%) contained calcifications; 65 lesions (63.1%) were BI-RADS category 5 (highly suggestive of malignancy); and 33 lesions (32.0%) were percutaneously proven cancers. The median number of wires placed was two (range, 2-5). Surgical histologic findings were carcinoma in 75 lesions (72.8%), atypical hyperplasia in eight lesions (7.8%), and benign in 20 lesions (19.4%). Of 42 calcific lesions that were bracketed and had postoperative mammograms available for review, complete removal of suspicious calcifications was accomplished in 34 (81.0%). Of 75 cancers that were bracketed, clear histologic margins of resection were obtained in 33 (44.0%). CONCLUSION: Bracketing wires were used during preoperative needle localization primarily for larger calcific lesions that were proven cancers or were highly suggestive of malignancy (BI-RADS category 5). Bracketing wires may assist the surgeon in achieving complete excision of calcifications, but bracketing wires do not ensure clear histologic margins of resection.
OBJECTIVE: The purpose of this study was to evaluate the outcomes of bracketing wire placement during preoperative breast needle localization. SUBJECTS AND METHODS: We prospectively examined mammograms of 1057 consecutive lesions that had preoperative needle localization and surgical excision and classified the lesions according to Breast Imaging Reporting and Data System (BI-RADS) final assessment categories. Bracketing wires, defined as multiple wires placed to delineate the boundaries of a single lesion, were used in 103 (9.7%) of 1057 lesions. Medical records, imaging studies, and histologic findings in these 103 lesions were reviewed. RESULTS: Of 103 bracketed lesions, median lesion size was 3.5 cm (range, 1.5-9.5 cm). Ninety-three lesions (90.3%) contained calcifications; 65 lesions (63.1%) were BI-RADS category 5 (highly suggestive of malignancy); and 33 lesions (32.0%) were percutaneously proven cancers. The median number of wires placed was two (range, 2-5). Surgical histologic findings were carcinoma in 75 lesions (72.8%), atypical hyperplasia in eight lesions (7.8%), and benign in 20 lesions (19.4%). Of 42 calcific lesions that were bracketed and had postoperative mammograms available for review, complete removal of suspicious calcifications was accomplished in 34 (81.0%). Of 75 cancers that were bracketed, clear histologic margins of resection were obtained in 33 (44.0%). CONCLUSION: Bracketing wires were used during preoperative needle localization primarily for larger calcific lesions that were proven cancers or were highly suggestive of malignancy (BI-RADS category 5). Bracketing wires may assist the surgeon in achieving complete excision of calcifications, but bracketing wires do not ensure clear histologic margins of resection.
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