Association between American College of Radiology Thyroid Imaging Reporting and Data System and Bethesda Scoring System in Assessment of Thyroid Nodule: A Prospective Cross-sectional Study

Introduction: In view of increased detection incidental thyroid nodules on ultrasonography, there is a need for standardising the reporting system better patient management. Aim: To assess concordance between two classification systems nodules: American College Radiology (ACR) Thyroid Imaging Reporting and Data System (TIRADS) 2017 criteria sonography Bethesda categories cytology. Materials Methods: A prospective, cross-sectional validation study was conducted in Department collaboration with Pathology at tertiary care hospital Dakshina Kannada district, Karnataka, India, over period 12 months October to September 2018. total 175 detected Ultrasonography (USG) were categorised based ACR TIRADS criteria. Ultrasound guided Fine Needle Aspiration Cytology (FNAC) performed scored basis categories. Nodules categorized into benign malignant under their assessed. Sensitivity, specificity, positive negative predictive value Pearsons Chi-square test statistical method kappa values used analysis. Results: Solid composition, hypoechoic echotexture, taller than wide shape, irregular margin microcalcification descriptors features more favour nodule. With FNAC as gold standard, had sensitivity, diagnostic accuracy 91.7 %, 86.3%, 63.5%, 97.6% 87.4% respectively (p-value <0.001). Conclusion: The stratification risk among or using yielded good result our study. careful examination nodules, can be select appropriate further evaluation