I was diagnosed with breast cancer 3 weeks ago.  I am 40 and this was my first mammogram.  They found 2 areas of DCIS and a tumor that they believe is about 1.2 cm.  I am scheduled for surgery on May 11 (bilateral skin-saving mastectomy, sentinel biopsy on both sides, axillary dissection as necessary, and immediate reconstruction.

I aslo had bone scan (negative) and a chest x-ray (negative). I had a CT of my abdomen that showed a possible abnormality on my liver.   So I then had a pet scan that showed the liver was okay but showed something on my right ovary. I then had an ultrasound which was negative, a blood test which was negative, a breast cancer marker test which was negative, and an ovarian cancer marker test was negative. Still not satisfied, I had another CT of my pelvis area.  The results were inconclusive as to my right ovary. They see 2 spots, one they believe is a cyst and the other they describe as a density. Now they want me to see gynecological oncologist and potentially have a transvaginal ultrasound performed this week.

My first question is what is the likelihood that the ovarian issue is cancer spread from the breast cancer? It seems very, very unlikely from what I have been reading but nothing seems to make sense anymore.  Second, if it not a spread but rather a separate instance of ovarian cancer, how should it be
approached?  I don't want to put off the mastectomy and reconstruction.  Finally, since I will likely have chemo and hormonal therapy for the breast cancer, would additional therapy be necessary if this is ovarian cancer?  Thanks!