During a diagnostic mammogram and ultrasound, a small lump was discovered in my right breast. A core needle biopsy showed atypical duct cells and an excisional biopsy was ordered. After the surgery, the pathology report came back negative. However, a follow-up ultrasound shows that the lump, presumed to be a fibroadenoma, is still present and only slightly larger in size. It seems the wire localization used for surgery was not placed properly and the surgery needs to be done again. Also, during the follow up ultrasound, another lump was discovered in my left breast. Surgery is recommended for both breasts to remove the lumps. Because atypical cells are present in the right breast, it is assumed that they could or will be present in the left breast, and a needle biopsy is not recommended.
How often does a wire localization miss? Should I request a core needle biopsy on the left breast before submitting to surgery?