Whats more important having brest removed for precaution or having biopsy of thyroid nodule. pet scan showed high probability for positive. nodule growled 7mm-11mm in 5 months. auxiliary has spots that glowed as well. which should i do first?

You need a good oncologist who can guide you further. In general, Thyroid nodules are less serious than Breast Cancer. You will likely need a biopsy of both areas, starting with a check of the axillary nodule that is showing up in the PET scan. You do not need removal of your breast, a Needle biopsy of the beast abnormality can be done quite easily if you first go to a Cancer treatment Center