What is the clinical significance of positive anti-thyroid antibodies in a patient that is post-thyroidectomy?

Ordinarily, the persistence of anti thyroperoxidase antibodies (antiTPO) or antithyrogloblin (antiTG) antibodies is of no concern or clinical relevance. However, in the case of patients with differentiated thyroid cancer, in whom thyroglobulin (TG) testing is a cornerstone of follow up, persistent a...