I had a microcalcifications show up on a mammogram done a few weeks ago and was immediately referred for a stereotactic biopsy. The results came back stating that there are "changes consistent with pregnancy" as well as atypia (I had a surgical biopsy in 2005, same breast, where atypical ductal hyperplasia was noted). My question is regarding the breast tissue changes consistent with pregnancy as I am definitely not pregnant (pregnancy test was done to be absolutely sure and last pregnancy was 10 years ago), nor am I taking any kind of hormone replacement. My doctor was at a loss to explain this only saying that this sort of finding is very rare and that I need to have a surgical biopsy now. Any insight would be greatly appreciated.