Aim The aim of this study was to validate the effectiveness of delayed risk stratification (DRS)
in predicting structural progression and compare the predictive value of American Thyroid
Association (ATA) risk stratification with that of DRS in patients with differentiated thyroid
cancer (DTC). Methods A total of 398 patients with DTC who underwent surgery followed by
radioactive iodine ablation were enrolled. Patients were categorized as having excellent
response, acceptable response, biochemical incomplete response, or structural incomplete�…