How is it that all of the breast tissue was not removed? I was and OR nurse and when I saw this type of procedure done ALL of the tissue was removed from the underside of the skin all the way to the muscle. So, it seems to me that an inadeqate approach was used. It is extremely rare for cancer to start in a muscle. I am a 2X survivor of this horrid disease and was very blessed with a good surgeon and lots of prayer to be permitted to survive.