I was diagnosed with stage IIIC OC in October 2007. Had complete cytoreduction, followed by 8 rounds of carbo/taxol. My CA-125 after surgery ( before 1st chemo ) was 16, then dropped to 7 after 2 treatments, and has been at 6 ever since. I completed treatments in April 2008 and had first post-treatment CT-Scan in August. Was told that other than a few spots that are most likely scar tissue, my CT Scan was normal. At a recent appointment, I received ( upon my asking ) a copy of the CT Scan Report. In addition to the information I already knew, the report indicated my chest area included a triangular mass of thymic tissue, consistent with thymic hyperplasia. I asked my doctor about it and he said it is common in children, but rae in adults my age ( I'm 50 ), and he said it ws nothing to worry about. Well....that is easier said than done. I'd like to know what is thymic hyperplasia, what causes it, and is it something to be concerned about ?