Comparative Performance of the 2015 and 2025 American Thyroid Association Initial Recurrence Risk Stratification Systems in Differentiated Thyroid Cancer.
BACKGROUND The 2025 American Thyroid Association (ATA) guidelines introduced significant modifications to the initial risk stratification system for differentiated thyroid cancer (DTC). However, the real-world prognostic performance and stage migration effects of these updates compared with the 2015 system remain uneva...