ObjectiveTo investigate the applications of ultrasound-guided vacuum-assisted stereotactic biopsy using Mammotome biopsy system for diagnosing presumed-malignant breast lesions less than 1cm in size. Methods113 cases of suspected to be malignant breast lesions detected by mammography and elastography were given ultrasound-guided vacuum-assisted stereotactic biopsy. The pathological results and complications were analyzed. ResultsAll lesions were proved as malignant breast tumors by pathology, including 10 cases of intraductal carcinoma, 12 cases of metaplasia cancer, 20 cases of invasive lobular carcinoma, 8 cases of medullary carcinoma, 5 cases of mucinous carcinoma and 58 cases of invasive ductal cancer. 30 cases were given modified radical mastectomy, 20 cases were given breast-conserving surgery and 63 cases were given simple mastectomy. After ultrasound-guided vacuum-assisted core biopsy, 4 cases appeared active bleeding, 3 cases suffered hematoma in the biopsy region, with the overall complication rate of 6.19%. ConclusionUltrasound-guided vacuum-assisted stereotactic biopsy can effectively diagnose presumed-malignant breast lesions, with the advantages of easy performance, minimal invasiveness and few complications.

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