einstein (São Paulo). 01/Jun/2016;14(2):119-23.

Correlation of Thyroid Imaging Reporting and Data System [TI-RADS] and fine needle aspiration: experience in 1,000 nodules

Antonio Rahal Junior, Priscila Mina Falsarella, Rafael Dahmer Rocha, João Paulo Bacellar Costa Lima, Matheus Jorge Iani, Fábio Augusto Cardillo Vieira, Marcos Roberto Gomes de Queiroz, Jairo Tabacow Hidal, Miguel José Francisco Neto, Rodrigo Gobbo Garcia, Marcelo Buarque de Gusmão Funari

DOI: 10.1590/S1679-45082016AO3640

ABSTRACT
Objective
To correlate the Thyroid Imaging Reporting and Data System (TI-RADS) and the Bethesda system in reporting cytopathology in 1,000 thyroid nodules.
Methods
A retrospective study conducted from November 2011 to February 2014 that evaluated 1,000 thyroid nodules of 906 patients who underwent ultrasound exam and fine needle aspiration.
Results
A significant association was found between the TI-RADS outcome and Bethesda classification (p<0.001). Most individuals with TI-RADS 2 or 3 had Bethesda 2 result (95.5% and 92.5%, respectively). Among those classified as TI-RADS 4C and 5, most presented Bethesda 6 (68.2% and 91.3%, respectively; p<0.001). The proportion of malignancies among TI-RADS 2 was 0.8%, and TI-RADS 3 was 1.7%. Among those classified as TI-RADS 4A, proportion of malignancies was 16.0%, 43.2% in 4B, 72.7% in 4C and 91.3% among TI-RADS 5 (p<0.001), showing clear association between TI-RADS and biopsy results.
Conclusion
The TI-RADS is appropriate to assess thyroid nodules and avoid unnecessary fine needle aspiration, as well as to assist in making decision about when this procedure should be performed.

Correlation of Thyroid Imaging Reporting and Data System [TI-RADS] and fine needle aspiration: experience in 1,000 nodules

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