Pandya A, Caoili EM, Jawad-Makki F, et al. - This study was undertaken to correlate diagnostic accuracy and reliability of the 2017 American college of radiology (ACR) thyroid imaging reporting and data system (TI-RADS) and 2015 American thyroid association (ATA) classifications for thyroid nodules. A retrospective cohort study was designed to include 1,947 consecutive thyroid nodules sampled with fine-needle aspiration (FNA) between 2007 to 2016. The primary endpoints included a comparison of the diagnostic accuracy of the TI-RADS and ATA classifications using ROC curve analysis. Researchers applied intraclass correlation and kappa statistics to ascertain interrater agreement. There was similar diagnostic accuracies and interrater agreement between the 2017 ACR TI-RADS and 2015 ATA classifications, but TI-RADS appears in fewer nodules being recommended for immediate FNAs and more nodules being recommended for imaging surveillance.