Pathology

Yes once they have physically looked at the tumour they know far more about it. Xx

Unfortunately yes it can happen. My DCIS with LCIS turned out to host extensive invasive cancer which means I now need a mastectomy, and sizes or grades or tumour can change. But my surgeon says a grade 1 could turn out to be a grade 2 but it’s highly unlikely to be a grade 3 or 4. Sometimes it’s less worrisome than thought. Either way, the best way to think of it is that the more information they have the better than can treat the cancer.

Anabrock. What wise words - the more information they have the better they can treat the cancer. Thank you for saying this, it really gives everything the right perspective. Ros. 

As others have said, they hve all the information about the tumour once they take it out and the biopsy is only a tiny bit of it.

It can go a good way too - they told me mine was grade 2 aggressive a biopsy and it turned out to be grade 1. So that was a nice surprise!