@HellonHeels what @dotty2 said. For ER+ HER2-negative breast cancers that have a good prognosis but maybe need some chemo because for example they are higher grade etc the NHS do the Oncotype test which is carried out in the States.
This is really common, not in the slightest bit unusual, plus, if they're doing that then you have a less aggressive cancer with better prognosis than nearly all other types of breast cancer except low grade ER+ HER2-neg (so I mean better than HER2-positive, or Basal, or metaplastic etc) . To sum up, it's not bad news! Even if you do need chemo, you won't need as much as Her2 positive or triple negative patients do because it must be equivocal from the biopsy whether it's even necessary. keep us updated! x
@Zoopet To answer your questions:
No, not unusual at all to have chemo before surgery. This is normal for many if not most HER2+ and Triple Negative patients. I had chemo before surgery myself (HER2+++, hormone negative). What's your subtype?
If your other breast hasn't got any cancer then there's no medical need to remove it AFAIK generally, unless there is a specific reason in your case such as a positive genetic test. I had a full mastectomy on one side, my other breast was clear of cancer and was left alone. I will get annual mammograms on the remaining breast. I was negative for the three genetic tests they did, although my subtype of breast cancer is an oncogene.
Are your MDT / oncologist / surgeon not advising you what they think you need in the way of lump / full mastectomy? Mine did, they said full mastectomy and full lymph node clearance. I followed their advice. It'd be very stressful to decide as a patient without their specialist advice - I hope they discuss it with you soon and you feel happy with what they think is the best plan.
After a mastectomy it does leave the body lopsided, but the NHS provide a free weighted silicone prosthetic breast to put inside a mastectomy bra. Unfortunately, I can't wear low cut tops any more, which means almost all my formal wear is useless now and other clothes too. I didn't have a reconstruction, so if you have that this problem wouldn't happen.
Regarding a secondary in the other breast, maybe ask your team what the chances of that are? Secondaries in my type HER2 hormone negative are most often in the brain, CNS, liver and lungs, but possible in loads of places. I am personally happy I've still got the other breast, but someone else on this thread had much larger breasts and felt the unevenness would be too extreme - I'm 34DD.
Keep us updated x