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KMID : 1114620050020020144
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Journal of the Korean Society for Breast Screening
2005 Volume.2 No. 2 p.144 ~ p.149
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Papillary Lesions of the Breast: Comparison of US-guided 14-Gauge Automated Gun and 11-Gauge Directional Vacuum-Assisted Biopsy Methods
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Ko En-Sook
Cho Nariya
Yang Sang-Kyu
Kim Do-Youn
Moon Woo-Kyung
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Abstract
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Purpose: To compare the outcomes of US-guided 14-gauge automated and 11-gauge vacuum-assisted biopsy for the papillary lesions of the breast.
Materials and Methods: A retrospective review of US-guided core biopsies of 1723 consecutive breast lesions between January 2003 and April 2005. Ninety-eight lesions (5.7%) were reported pathologically as papillary lesions. The biopsies were performed with using a 14-gauge automated gun on 65 lesions or with using an 11 gauge vacuum-assisted device on 33 lesions. Thirty-five lesions (54%, 35/65) of 14-gauge automated gun and 5 lesions (15%, 5/33) of 11-gauge vacuum-assisted biopsy underwent surgery. The histologic findings were compared with the surgical, imaging and follow-up findings. The histologic underestimation rate, the repeat biopsy rate, and the false negative rates were compared between the two groups. The repeat biopsy rate was determined by dividing total number of excisional biopsy of benign lesion, high-risk lesion and uncertain diagnosis into the total number of those lesions. An “ADH underestimation”was defined as a lesion yielding atypical ductal hyperplasia at percutaneous biopsy and carcinoma at surgery and “DCIS underestimation”was defined as a lesion yielding ductal carcinoma in situ at percutaneous biopsy and invasive carcinoma at surgery.
Results: The repeat biopsy rate was 47% (27/57) for 14-gauge automated gun biopsy and 9.7% (3/31) for 11- gauge vacuum-assisted biopsy. ADH underestimation was 50% (6/12) for the 14-gauge automated gun biopsy and 0% (0/4) for the 11-gauge vacuum-assisted biopsy. DCIS underestimation was 14% (1/7) for the 14-gauge automated gun biopsy and 0% (0/2) for the 11-gauge vacuum-assisted biopsy device. The false negative rate was 0% in these two groups.
Conclusion: For the papillary lesions of the breast, the outcomes of the US-guided core biopsies performed with the 11-gauge vacuum-assisted device were better than those outcomes of the biopsies performed with the 14-gauge automated gun, in terms of underestimation and repeat biopsy.
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KEYWORD
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Breast biopsy, Breast US, Breast neoplasm
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