I am 47 yrs. old and pre-menopausal. I had a mastectomy to remove a 1.2cm breast tumor, Grade II, ER 96%, PR 98%, HER2/neu 0, no lymph node involvment but vascular invasion. Could I be a candidate for hormone therapy (or ovarian ablation) alone or does the size of the tumor automatically indicate chemo? I had to have a mastectomey due to prior history of chest radiation to treat Hodgkin's Disease.