I was diagnosed in a similar fashion as you. Calcifications on screening mammogram, magnified views, biopsy with DCIS diagnosis. No one thought it would be positive, but here we are. (No lump and area was very small--6mm x 4mm) Had lumpectomy surgery about 5 weeks after diagnosis. At age 61, though my risk of recurrence is low, (there are formulas that your care team can run that can give you risk of return), I opted to have 5 radiation treatments and am on an Aromatase Inhibitor. I think there are many options and depending on your age and other health concerns you may have, you can make some decisions about what is best for you going forward. There is definitely the emotional whiplash of, "it's nothing, don't worry about it" to "you need surgery, radiation and medication". It took me awhile to reconcile that. For me, doing everything I can to avoid a recurrence is something I feel I want to do, but every person needs to make that call based on their own personal circumstances. Best wishes!