Abstract Objective: To identify cytologic characteristics in a suspicious for malignancy cohort that may help to recognize false positives in cytopathological tests of thyroid nodules in a “real world scenario”, with histopathological reports as the gold standard. Methods: Cytomorphologic features of suspicious for malignancy thyroid nodules in a 13-year retrospective database were reviewed. Therefore, we identified false positive cases, analyzed the possible causes of cytopathological diagnostic failure and calculated the frequency of false positive results and the risk of malignancy […]

ABSTRACT Objective: The aim of this study was to determine whether classifying hypoechogenicity in three degrees (mild, moderate, and marked) could improve the distinction between benign and malignant nodules and whether such an approach could influence Category 4 of the Thyroid Imaging Reporting and Data System (TI-RADS). Materials and methods: In total, 2,574 nodules submitted to fine needle aspiration, classified by the Bethesda System, were retrospectively assessed. Further, a subanalysis considering solid nodules without any additional suspicious findings (n = […]

Thyroid nodules have a high incidence in the population. This study aims to observe the value of the association between the aspiration and non-aspiration biopsy and to compare the obtained cytology by these two techniques. Sixty-one patients with thyroid nodules were selected and underwent ultrasound-guided thyroid biopsies by both techniques. Quality of the obtained material was analyzed by two independent pathologists, according to five criteria. There was no difference between the techniques regarding the sum of the points of the […]