Evaluation of Ultrasound-guided 8-Gauge Vacuum-assisted Excision System for the Removal of US-detectable Breast Lesions

Aim: To assess the ability of ultrasound (US)-guided vacuum-assisted breast excision (VAE) to remove Breast Imaging Reporting and Data System (BI-RADS) >= 3 breast lesions in order to analyze US features most frequently associated with complete excision. Materials and Methods: A total of 266 BI-RADS >= 3 lesions without microcalcifications underwent USVAE. US-VAE and gold standard pathological results were compared. US features of lesions were analyzed. Results: The complete excision rate was 93.61%; the VAE agreement rate was 99.62%. Circumscribed margins, regular shape, parallel orientation, and the absence of posterior features were favorable US features associated with complete excision. Lesions completely excised were: BI-RADS 3 <= 21.10 mm and BI-RADS 4 <= 18.70 mm with one unfavorable US characteristic, and BI-RADS 4 lesions <= 13.5 mm with two unfavorable US features hindered complete removal. Two atypical ductal hyperplasias (<10 mm, one unfavorable feature) and eight ductal carcinomas in situ (<= 8.7 mm, one/two unfavorable features) were completely removed. Conclusion: US-VAE is highly accurate for diagnostic purpose and, in some cases, highly successful for complete lesion excision. This success also depends on the US characteristics and size of the lesion.