Hi. Is the surgeon saying that the only treatment that you’re having is surgery? If so, that is great. Just be warned - I am not sure what other people’s experiences have been with a 5mm lump - he may think it’s a bit extreme and say no to a bilateral mastectomy. I don’t know your history so I can’t really comment.
Wait until you’ve spoken with your surgeon next week. Mum wanted to chop hers off for a 19mm lump, but surgeon said no and did a wide lumpectomy instead.
I had a bilateral reduction 7 years ago... (before I was diagnosed 18 months ago) so I know what it’s like to get new boobs - twice!