Diagnostic Performance of the American College of Radiology Thyroid Imaging Reporting and Data System
Bhushan Shah, Rajesh Mahesan, Indira Vijayasekar, Bhavini B Shah
American College of Radiology Thyroid Imaging Reporting and Data System Classification, Prospective observational study, Thyroid swellings, Ultrasonography
Citation Information :
Shah B, Mahesan R, Vijayasekar I, Shah BB. Diagnostic Performance of the American College of Radiology Thyroid Imaging Reporting and Data System. World J Endoc Surg 2020; 12 (3):113-116.
Aim: A study was conducted in our hospital to find the diagnostic performance of the American College of Radiology (ACR) Thyroid Imaging Reporting and Data System (TI-RADS) in distinguishing benign and malignant thyroid swellings.
Materials and methods: A total of 50 subjects were enrolled in this prospective observational study after obtaining consent. Ultrasonography was done in all patients and thyroid swellings were classified by the ACR TI-RADS system. The final diagnosis was made based on histopathological examination. The results were analyzed and the diagnostic indicators of ACR TI-RADS and its individual components were derived.
Results: The mean age of the study sample was 44.18 years with a standard deviation of 14.29 years. The most common clinical presentation was multinodular goiter (76%). Benign lesions (80%) were more common than malignant lesions (20%) as diagnosed by histopathological examination. Of these, the most common malignancy was papillary carcinoma (60%). The risk of malignancy of TR1 was 0%, TR2 was 5.6%, TR3 was 10%, TR4 was 54.5%, and TR5 was 100%. The ACR TI-RADS classification system had good sensitivity (80%) and specificity (87.5%) with a diagnostic accuracy of 86%.
Conclusion: The study has shown that lower TI-RADS classes were commonly associated with benign lesions and higher TI-RADS classes were frequently associated with malignant lesions. The diagnostic indicators showed that the ACR TI-RADS is a dependable system to detect malignancy in thyroid swellings.
Clinical significance: Enlargement of the thyroid gland is a frequent complaint among patients presenting in a hospital. Evaluation of these swellings is required to detect malignancy. Several studies have been done describing the accuracy of Thyroid Imaging Reporting and Data System (TI-RADS), which was proposed by the ACR utilizing ultrasonography in the foreign population. The utility of this system in our population was scarcely studied. This warrants a study to assess the diagnostic performance of this classification and its utility in the Indian population.
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