Hi - It's good you're being proactive about your health, given your family history of breast cancer. Microcalcifications in and of themselves aren't cancerous; but they can be a "shadow" of cancer, signalling its presence or its future development in that spot. And while most microcalcifications turn out to be no problem, when they present themselves in a cluster or pattern, rather than scattered, there's a greater likelihood of cancer being involved.
I think your doctor is doing the right thing, given your increased risk. You need to be extra careful. That said, about 85% of all breast biopsies are negative - so statistically speaking, the odds are on your side. I know this is scary for you; and in the end, there's a chance that this will turn out to be cancer. But think about it - since you've seen no sign of cancer at all, and can feel no lump, and mammograms have shown no lump, if it IS cancer it's undoubtedly extremely early, and thus very, very treatable.
Best of luck to you. And come on back, if you need to - we can help. PJH
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