Cancer risk estimation using American College of Radiology Thyroid Imaging Reporting and Data System for cytologically indeterminate thyroid nodules.

Background: We sought to determine if using the ACR TI-RADS ultrasound score combined with the Bethesda diagnosis can help augment thyroid cancer risk estimation.

Methods: TI-RADS scores and Bethesda diagnoses were collected for patients treated in our center who had undergone thyroidectomy. Data from 186 patients with both TI-RADS scores and Bethesda diagnosis, and Bethesda diagnosis alone, were analyzed by multivariable regression analysis and observed for whether the pathology was benign or malignant.