I was diagnosed with a borderline cyst, I had surgery and they removed ovaries, uterus and omenctum. Biopsy was made of all the tissues and nothing was found. I had a control after surgery and everything is ok. I would like to know if eating soy protein could be bad for me. Is soy protein the cause of my borderline cyst? Could I have a borderline cyst again if I eat soy? I don't have ovaries, nor uterus, how could I have a cyst again? Are borderline cysts related to breast cancer? Can soy protein cause breast cancer? Thanks for your help.