Goodness! That is a really hard one!!! It really comes back to what you feel in your gut, your instinct. I was initially diagnosed in 2011 with DCIS, I had aggressive treatment my Surgeon said of Radiation and Tamoxifen for 4yrs. My annual check up last year showed a recurrence but hard to detect as it was in the scar tissue from the previous lumpectomy 4yrs prior. It was IDC Stage 3 aggressive, very lucky but I had to undergo Chemo 4.5 months and now on Arimidex. Due to a recurrence, eventhough Id had 2 major lumpectomies, clear margins both times and no lymph node involvement, they recommend a mastectomy and reconstruction as its a gamble. I am negative to BRCA Gene testing so have elected just a single mastectomy, which I am still struggling with doing, and yet struggling not to for fear of a 3rd time. I agree do your homework and hopefully some ladies can chime in with their experiences to help. Hugs Melinda xo