I think that you should speak with your physician regarding the ovarian "cyst" I would need more information regarding the reports.
I think this is a good question, and not too personal of a sort either. I would be interested in a response as well. When you have an MRI and it shows cyst or any growth, is it possible to tell from the results if the tissue is benign, or cancerous?
I think sometimes the radiologist can tell, like in my case, he highly suggested I had osteonecrosis of the femur rather than osteochronditis dissiccans, and which the radiologist thought after reading the bone scan because it was a hot lesion. It also said there was a large Baker's cyst.
I asked the orthopedist if there was any chance that bone mets may be involved since I was diagnosed last year with IBC and many cancerous lymph nodes were still present after chemotherapy as it turned out from surgery, and none of them had showed up on an MRI I had two weeks before surgery. The orthopedist told me 'NO', there was no cancer.
it's an interesting question, i think, for general learning.