[Rich66]

You should be able to ask the onc why CMF. There might be perfectly valid reasons to do so. I know there is at least one study where combining CMF with Tamoxifen seemed helpful. And if the only known met is 18mm, might be thinking it was dealt with by local therapy. (body checked by PET, brain by MRI?)But I would imagine you would continue with herceptin and or tykerb regardless.