How should a contralateral breast cancer be treated when found during a prophylactic mastectomy?   

In a patient who recently completed NAC, TM/LND and PMRT for a hormone positive locally advanced breast cancer and is then found to have a contralateral breast cancer during prophylactic mastectomy for reconstruction, should further NAC and PMRT be provided if the pathology warrants it? What guides your decision to give further NAC or PMRT for a contralater breast cancer after recent completion of these modaliities for an ipislateral breast cancer?

Answer from: Medical Oncologist at Academic Institution