How would you treat bilateral synchronous breast cancer with single bony metastatic disease on imaging when one is ER+ HER2 neg and other is TNBC?

I will make some general statements, but lots of "depends" that you, the patient, and your team must discuss and decide. Firstly, it is important to biopsy this single site to determine which breast cancer has metastasized. It is also important to recognize that although you see "a single bony metas...