I am sorry you are having to wait for a week for answers. It can be so tough. I would try to remain positive. It sounds like they are trying to reassure you with the information they have given. The next test(s) should give you the answers you need. It sounds everything will be just fine!
What was your outcome? I have the same exact thing and mine is IDC inner ductal carcinoma and it's cancer, i began a round of chemo and it enlarged and i'm now undergoing taxol things are getting much better. I pray that you are okay and that your doctors are getting straight to your issue. Love, Heather