[Henny]

I had a mammo which showed a few new calcs that weren't there the year before. I had no palpable mass The radiologist suggested waiting and redoing the mammo in 6 months. I suggested that I call a surgeon since if they weren't there the year before they shouldn't be there now.
I called a well know surgeon and made an appointment. In the meantime a clinic in town got a new breast only PET scanner (PEM) and I had a free scan there (since they were just getting started). It showed a big hot spot where the calcs were. I went to the surgeon with the PEM scan in hand. Turned out to be IBC and also a DCIS.
Imaging may be expensive but I still think it's cheaper than doing invasive procedures. My surgeon said her philosophy is to image twice and cut once
Alaska, If I were your relative I would ask for more imaging to get to the bottom of this. With mammos, Ultrasound, MRI, PEM, and BSGI (breast scinti gamma imaging-like PET but different isotope) there should be no reason to do a biopsy blindly
Henny