Correlation of Ultrasound Findings With the Bethesda Cytopathology Classification for Thyroid Nodule Fine-Needle Aspiration: A Primer for Radiologists

OBJECTIVE. Ultrasound and ultrasound-guided fine-needle aspiration play a critical role in the evaluation of thyroid nodules. The Bethesda System for Reporting Thyroid Cytopathology (TBSRTC) was developed to facilitate communication among cytopathologists, radiologists, and referring physicians. The reporting scheme has rapidly become one of the most important contributions to thyroid nodule management. In this article, we review the significance of the TBSRTC categories and their implications in stratifying risk in the management of thyroid nodules. CONCLUSION. Knowledge of TBSRTC will allow the radiologist to better understand the criteria for thyroid nodule specimen adequacy, the components of risk stratification, and the standard terminology used for effective communication between patients and clinicians.