[1rarebird]

I don't know which way my case would impact your search for antectodal information on the possible link between thyroid disease and breast cancer. But I was diagnosed as sub-clinical hyperthyroid for almost 8 years before learning that I also had breast cancer. My oncologist didn't think there was a connection. My endocrinologist thought there might be. At any rate, my thyroid was removed after I was finished with Herceptin, chemo and radiation because it was covered with lesions that looked suspicious to the doctors. The thyroid turned out to be benign and I am now on levothyroxine for life. I suspect there is a link.---bird