Diagnostic Accuracy of American College of Radiology Thyroid Imaging Reporting Data System: A Single-Center Cross-sectional Study

Pamela Ann Aribon; Emmylou Teope; Anna Lyn Corneja-Egwolf; Maria Patricia Deanna Maningat

doi:10.15605/jafes.039.01.08

Authors

Pamela Ann Aribon St. Luke's Medical Center - Global City https://orcid.org/0000-0003-4389-8706
Emmylou Teope St. Luke's Medical Center - Global City https://orcid.org/0000-0002-7899-3028
Anna Lyn Corneja-Egwolf St. Luke's Medical Center - Global City
Maria Patricia Deanna Maningat St. Luke's Medical Center - Global City https://orcid.org/0000-0003-1984-9277

DOI:

https://doi.org/10.15605/jafes.039.01.08

Keywords:

ACR-TIRADS, FNAB, thyroid nodules

Abstract

Objective. This study aims to evaluate the diagnostic accuracy of the American College of Radiology Thyroid Imaging Reporting Data System (ACR TI-RADS) in identifying nodules that need to undergo fine-needle aspiration biopsy (FNAB) and identify specific thyroid ultrasound characteristics of nodules associated with thyroid malignancy in Filipinos in a single tertiary center.

Methodology. One hundred seventy-six thyroid nodules from 130 patients who underwent FNAB from January 2018 to December 2018 were included. The sonographic features were described and scored using the ACR TI-RADS risk classification system, and the score was correlated to their final cytopathology results.

Results. The calculated malignancy rates for TI-RADS 2 to TI-RADS 5 were 0%, 3.13%, 7.14%, and 38.23%, respectively, which were within the TI-RADS risk stratification thresholds. The ACR TI-RADS had a sensitivity of 89.5% and specificity of 54%, LR + of 1.95 and LR - of 0.194, NPV of 97.7%, PPV of 19.1%, and accuracy of 58%.

Conclusion. The ACR TI-RADS may provide an effective malignancy risk stratification for thyroid nodules and may help guide the decision for FNAB among Filipino patients. The classification system may decrease the number of unnecessary FNABs for nodules with low-risk scores.

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Author Biography

Pamela Ann Aribon, St. Luke's Medical Center - Global City

Center for Diabetes Thyroid and Endocrine Disorders

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