Score system for cytological evaluation of fine-needle aspiration specimens to predict the diagnosis of papillary thyroid carcinomas.

Introduction: According to the World Health Organization's classification of endocrine tumors, papillary thyroid carcinoma (PTC) accounts for almost 90 % of malignant thyroid neoplasms. This study aimed to create a point system based on cytomorphological criteria for evaluating FNA products from thyroid nodules to predict the risk of papillary thyroid carcinomas.

Methods: This was an analytical observational study based on a retrospective analysis of cytological reports and surgical specimens from January 1, 2016, to December 31, 2021.

Thyroid FNA performed by cytopathologists accompanied by radiologists guiding the ultrasound provide high-level quality results: A retrospective observational study.

Background: On thyroid cytology, false negative and false positive rates are considered parameters for quality control. Nevertheless, there are few studies about medical professional involved in this procedure. We conducted a 4-year cytohistological correlation of thyroid specimens in a single institution.

Thyroid nodules 1 cm or less are related to Bethesda System nondiagnostic and suspicious for malignancy categories.

Objective: To compare the frequency of fine needle aspiration (FNA) cytological results between nodules 1 cm or less and nodules greater than 1 cm.

Methods: All FNAs performed between January 2016 and December 2019 at an institute in Brazil were analysed. For each nodule, at least two conventional slides were produced (one stained by Giemsa and the other by hematoxylin and eosin).

Bethesda System Categories of Fine Needle Aspiration Cytology Are Not Associated with Thyroid Nodule Location: A Single Institution Experience.

Introduction: Thyroid isthmus is defined as the thin band connecting thyroid tissue between both lateral thyroid lobes. Recently, a possible association between thyroid nodules located in the isthmus and malignancy was proposed. The aim of this study was to compare the frequency of The Bethesda System for Reporting Thyroid Cytopathology (TBSRTC) categories between nodules from the isthmus and nodules from both thyroid lobes.