I am glad you have gotten your biopsy results so quickly, waiting for biopsy results always feels like a year. Obviously this isn’t good news but it isn’t the worst news either. LCIS means this is still encapsulated and not quite invasive, it hasn’t started invading the surrounding tissue. This is as good as it gets in terms of finding it early. All that early screening due to family history just paid off. I know this feels awful (I remember this time) but you got this.💕
My personal advice would be to ask for any testing possible to be done on this tissue to guide treatments. You will have some decisions to make as I am sure you are aware, make the best decisions you can for YOU, using as much information as you can get, then you can move forward without second guessing yourself.
You have a little time to come to terms, but you will have a lot of information coming at you at once. Do you have a family member or a friend who can join you at your appointment with the surgeon?