Delayed risk stratification system in pT1aN0/Nx DTC patients treated without radioactive iodine.

Purpose: Delayed risk stratification (DRS) system by Momesso and coworkers was accepted by the American Thyroid Association as a diagnostic tool for the risk stratification of unfavorable clinical outcomes and to monitor the clinical outcomes of differentiated thyroid cancer (DTC) patients treated without radioactive iodine (RAI). The aim of this study was to evaluate the DRS system in patients with pT1aN0/Nx stage.

Methods: The study included 304 low-risk patients after thyroidectomy ( = 202) or lobectomy ( = 102) without RAI and were treated at a single center.