Hi! I appreciate all your thoughtful responses!
Just to clarify, I’m in favor of all kind of treatments that will save lives, as well as early detection techniques as long as they don’t make your condition worse.

I made my original question to see if anyone has found out if biopsies done to only-DCIS increase the risk of invasion. If that’s the case, it is a useful information to have when the time comes to make a decision for treatment. For example, I found a study that shows a small percentage of women who decided towards skin-sparing mastectomy to later find a recurrence in the skin at the needle entry site.
You can find out more here:
pubmed.ncbi.nlm.nih.gov/16684314/

I’m not against biopsies and I’m not saying they are not useful, but I’d like to know more about the risks, and I would’ve liked for sure that my Doctor informed me about them before performing one.

I will edit my original post to make my question more clear.

Thank you all!