What is the expected life span of stage 3 a her2 + 43 years old breast cancer patient?

Results encoraging: Overall survival of stage iii breast cancer 70% her2 breast cancers are aggressive so needs aggressive, targeted chemotherapy , with Herceptin (trastuzumab) in combination with toxal ( and other chemo ) need to work closely with oncologist.

It depends: Most her2 positive breast cancer are successfully treated. A large proportion of women are cured and live normal lives. But it all depends on the associated features of your cancer and the type of treatments given to you. I would say that the expected life span may be normal although it is impossisible to predict the future once you have had cancer. Only time will define it. But i would be hopeful.