I had a mammogram and USS with core tissue biopsies for a breast lump in December. The mammogram and USS did not reveal anything concerning, but the Consultant was not happy that the physical examination and the scans were representative of what he could feel. The biopsy results revealed normal tissue but I have to have the biopsies repeated on 6th Jan. Just wondering if is likely that the wrong area was biopsies? Also what percentage of repeat biopsies come back malignant? I had endometrial cancer last year and a strong family history of breast cancer.