Spikemomma I was diagnosed with BC 2 years ago, so will tell you what happened to me.
At the first visit to breast clinic after discovering lump, I had an examination, biopsy, blood tests and mammogram.
two weeks later I had results and two weeks after that a mastectomy. At your mastectomy or lumpectomy or whatever surgery you have, they test to see if cancer has spread to your lymph nodes. In my case it had, so I had bone and CT scans to check it had not spread further, then had the rest of my nodes removed under my arm.
Because lymph nodes were involved I then had chemo for 6 months. then radiotherapy, a year of herceptin (Not everyone has this part - it depends on the type of tumour). I am now one year into five years of tamoxifen treatment (this is an anti cancer drug.)
Its very early days for your friend, if its of any help, I was told at my first appointment by the consultant that he was certain it was cancer, tests just confirmed. I don't know what your friends situation is.
Her prognosis if she is DX, will probably come after her surgery when they can determine the extent of the cancer.
All the very best to her, it's a worrying time, but have a glance at the tamoxifen thread if you want to see all us BC ladies leading normal lives and getting through it