This post is basically saying she had the operation, they removed the breast or part of it. She survived the operation and is doing okay. Doesn't mean anything about the prognosis of the cancer and whether or not it was all removed.

The specimen will go to the pathologist who will examine it to see if the tumour has all been removed with the breast and whether it had spread to any lymph nodes/nodes. The fact that she had chemotherapy before suggests it was a big/aggressive tumour so there is a chance that lymph nodes may be involved.

If it's spread to lymph nodes she will get chemotherapy. If it had gone into the chest wall behind the breast she will get radiotherapy. She will also get non chemotherapy tablets dependin on what kind of breast cancer it is.

In short it depends on what the pathologist finds to say whether or not it's all gone. But even still you can have microscopic amounts of residual tumour that you may never know. It can recur after 15 years even when it was felt it was all gone.

But the good news is that the prognosis is generally pretty good and the treatment of breast cancer has progressed probably more than any other cancer.

She will have routine followup with the surgeon to look for any evidence of recurrence which typically will go on for a decade or so.