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PURPOSE: The classification of indeterminate cytopathology at thyroid fine-needle-aspiration (FNA) has been updated to reduce the number of unnecessary surgery; the 2014 Italian classification introduced the low-risk (TIR3A) and high-risk (TIR3B) subcategories. Aim of this study was to identify the ultrasonographic (US), clinical and cytological predictors of malignancy among TIR3B nodules from a single institution. METHODS: A prospective observational study including 1844 patients who underwent thyroid FNA from June 2014 to January 2019. Ultrasonographic, clinical and cytological features were recorded. All TIR3B diagnoses were referred to surgery. According to final histology, patients were divided into thyroid cancer (TC) or benign nodules. Chi-square test, or Fisher exact test when appropriate, were used to compare groups and logistic regression analyses were used to determine independent predictors of malignancy. RESULTS: Of 1844 FNAs, 96 (5.2%) were TIR3B. Histology report was available in 65. Among them, 25 (38.5%) were TC. Predictors of TC were nodule size 

Original publication

DOI

10.1007/s40618-020-01200-0

Type

Journal article

Journal

J Endocrinol Invest

Publication Date

08/2020

Volume

43

Pages

1115 - 1123

Keywords

Fine needle aspiration, Indeterminate cytopathology, TIR3B, Thyroid cancer, Thyroid nodules, Ultrasonography, Biopsy, Fine-Needle, Cytodiagnosis, Female, Follow-Up Studies, Humans, Italy, Male, Middle Aged, Prognosis, Prospective Studies, Risk Factors, Thyroid Neoplasms, Thyroid Nodule