Hi @kruzin - I don't know if I'm too late to post my experience as you may have already gone ahead and done your surgery. But, if not,
I wanted to share my information with you, if it might help you.

I just had my bilateral mastectomy with reconstruction less than a month ago. I had biopsies in both breasts. I learned one breast had cancer the other tested out benign. The diseased breast had several large masses that all tested malignant and a lumpectomy was not deemed 'ideal' due to the amount of tissue removal involved so a full mastectomy was indicated for that one breast.

I am a research nut and did copious research on the subject and also had 2 consults with the breast surgeon and 2 with the plastic surgeon before deciding. I also spoke with my spouse, 2 children and daughter-in-law who's a nurse. During my weeks of contemplation and research, I subscribed to MedScape and read many of their published medical studies on mastectomy and breast cancer, including survival rates, surgery options, decisions made by patients who chose a particular option and comments from nurses and surgeons. I also searched every article I could on the internet and read many patients' comments.

In the end, I decided to remove both breasts and do immediate implant placement in both. I knew I wanted reconstruction as I would be too depressed otherwise. Mental health is equally as important as physical health and should be weighed as carefully, in my opinion.

My reasoning for doing a bilateral mastectomy and immediate reconstruction rather than just doing one breast is as follows:
* If both were done at once, the plastic surgeon would be able to make both breasts match closely, utilizing the new Alloderm artificial skin and identical silicone breast implants.
* I currently have excellent insurance and who knows what I may have years from now if the healthy, remaining breast were to develop something.
* I will never be younger than I am now, and my chance of a good recovery should be better now than years down the road (if cancer were to develop again).
* I would have one time off from work, one (longer) procedure day, one hospitalization, one anesthesia, and one recovery.
* Both breast gone = no further mammos, MRI's, no chemo, no radiation, (hopefully??) and no further worry about the other shoe dropping with the remaining 'healthy' breast developing something down the road. I have read how women who have cancer in one breast must go in and have any remaining breast tissue looked at and poked and prodded yearly for the rest of their lives. I wanted to avoid that if I could. Who needs more stress and worry?
* In addition, my healthy breast had been banged up pretty good with a stereotactic biopsy and had developed a large, hard lump and depression at the point of entry. I felt that it was now injured and may be more susceptible to getting cancer (gut feeling) which further directed me to going forward with both mastectomies.
All-in-all, I am currently glad I chose as I did, however I am still in recovery and may come to a different conclusion later, but I'm hoping for the best!