Dear madam. I understand you and your concern, but it is not possible to evaluate agressivity of tumor
by lab parameters. It can be evaluated only by surgeon during the procedure and PHD analysis. Stage IIIc means serious involvement of ovary and structures around it or lymph
nodes. It needs to be treated more agresively than stage II and i recommend you to do chemotherapy
despite its complications. Ovarian cancers unfortunately are almost the worst ones and you shouldnt do any compromise. Even if it seems to be borderline without detected invasive implants there can be some micro-metastasis which wont be seen during the surgical procedure. Chemoth can be very preventive and therapeutic and you will feel safer.
Wish you good health