An elderly female patient aged about 70 was referred for evaluation of thyroid swelling. PR 107/minute,r egular.BP 130/80, Examination showed multinodular swelling, T3-2.04 (0.6-1.8),T4-11.9(4.5-12.6) TSH-0.05.USG Thyroid-multiple hypoechoic/heteroechoic subcentimeter nodular lesions in both lobes of thyroid-for follow up Well defined anechoic nodules in lower pole of left lobe of thyroid-?Nature.suggested FNAC correlation.
What is your diagnosis? What is the next step diagnostically and therapeutically?