Preablative Stimulated Thyroglobulin Levels Can Predict Malignant Potential and Therapeutic Responsiveness of Subcentimeter-Sized, 18F-fluorodeoxyglucose-Avid Cervical Lymph Nodes in Patients With Papillary Thyroid Cancer

Subcentimeter-sized FDG-avid LNs with high levels of sTg (>6.0 ng/mL) were metastatic, non-iodine avid and had little effect in IAT. Therefore, appropriate follow-up strategies need to be undertaken in these patients.