Ultrasound classification of thyroid nodules: does size matter?

ABSTRACT Objective To determine whether the size of thyroid nodules in ACR-TIRADS ultrasound categories 3 and 4 is correlated with the Bethesda cytopathology classification. Methods Thyroid nodules (566) subclassified as ACR-TIRADS 3 or 4 were divided into three size categories according to American Thyroid Association guidelines. The frequency of different Bethesda categories in each size range within ACR-TIRADS 3 and 4 classifications was analyzed. Results Most nodules in both ACR-TIRADS classifications fell in the Bethesda 2 category, regardless of size (90.8% and 68.6%, ACR-TIRADS 3 and 4 respectively). The prevalence of Bethesda 6 nodules in the ACR-TIRADS 4 group was 14 times higher than in the ACR-TIRADS 3 group. There were no significant differences between nodule size and fine needle aspiration biopsy classification in any of the ACR-TIRADS categories. Conclusion Size does not appear to be an important criterion for indication of fine needle aspiration biopsy in thyroid nodules with a high suspicion of malignancy on ultrasound examination.

Bibliographic Details

Main Authors:	Sakajiri,Raissa Kitaguchi, Rahal Junior,Antonio, Francisco Neto,Miguel José, Queiroz,Marcos Roberto Gomes de, Garcia,Rodrigo Gobbo, Martins,Leandro Aurélio Liporoni, Malerbi,Domingos Augusto Cherino
Format:	Digital revista
Language:	English
Published:	Instituto Israelita de Ensino e Pesquisa Albert Einstein 2022
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-45082022000100250
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