<prompt> Which mets are most common to thyroid?LungBreastBrainGIT  <response>: Ans. a LungRef: Schwartz 10th edition Page 1543 and 1556Metastasis to thyroid: MC from Lungs breastMetastasis from Thyroid: Papillary cancer: More of Lymphnode metastasis Follicular and anaplastic cancer: Hematogenous mets to lungs Medullary cancer: More of Liver metastasis. 