Hi, As far as my opinion is, you need to undergo follow up with thyroglobulin
levels and neck ultrasound
to check for any recurrence. Radio iodine
scans are used for knowing the amount of thyroid tissue post total thyroidectomy
so that the residual disease if any can be ablated with an ablative dose of radio iodine. Other methods to look for neck masses in such patients are CT, MRI or PET.