Hi, I am considering using prolia for the first time. I just read the literature where it says to tell you doctor if you have had thyroid - parathyroid surgery. I am wondering why they ask this. I have had my left thyroid removed in 2005 during neck exploration due to a thyroid nodule. ALso. I had one parathyroid removed for biopsy as my PTH was slightly above normal - although no one gland in particular was revealing itself to be the culprit. The parathyroid tissue was normal. When I was a child, radiation therapy was thought to be an effective treatment for mastoiditis. I did have several treatments in about 1954 - and I am wondering if all my neck problems today are a result of this treatment. (I also have developed a parotid tumor which I face elective surgery for removal.) So, I guess my question is - why would having had thyroid/ parathyroid surgery effect whether or not someone would should take (or not) the prolia shot? (The biopsy of my thyroid was positive for papillary cell carcinoma - and I believe Hashimoto s thyroiditis.) Should I be worried about taking the shot?