It happened to me and a few others on this forum would probably feel the same that I do, that taking HRT caused the cancer cells,
or masses,
or cysts to grow faster than they would have otherwise.
The thing is that they do not know what causes Ov Ca, but, the important thing to remember is that you did nothing to cause this to happen...nothing!!!!!
I have also heard that lower grades OvCa, and I am guessing you were low staged as it was confined to one ovary, recur later in life...