History invasive breast cancer, US of thyroid show multiple solid nodule, largest 1.5 CM w/microcalcifications & hypervascularity. Odds of malignancy?

Possible. most likely your doctor will do aspiration biopsy ( FNS ) in the office wait for the results , in general prognosis is excellent in most of the thyroid cancers . 44 yr old can expect cure , speak to your doctor.