Objective: Our objective was to evaluate the disease spectrum of thyroid cytopathology and correlation of the Bethesda reporting system with final histopathology in our medical centre.
Results:A total of 287 thyroid fine needle aspirations were included in the study.The majority (55.1%) of these were benign (B2). Surgery was performed on 53 cases and the total malignancy rate was 39.6%. Our study had a favourable accuracy rate of 70%. A B4 Bethesda category had a higher malignancy rate (50%) than previously reported.
Conclusion:We found a higher malignancy rate (50%) based on the Bethesda B4 category of the fine needle aspirations in our series, yet it is based on a small sample.The differences in malignancy rates between centres have an important impact on clinical decisions.
K E Y W O R D SBethesda classification, fine needle aspiration, gene expression classifier, thyroid cancer, thyroid nodule
Approximately 40% of patients with highly elevated C-reactive protein had a normal white blood cell count. The majority of them had a bacterial infection.
Objectives:The accuracy of a cytological diagnosis obtained by fine needle aspiration is influenced by several factors including the technique used and the experience of both the aspirator as well as the cytologist. In this project we planned to evaluate the interobserver differences of thyroid nodule cytopathology in our medical centre.Methods:The study was conducted using retrospective pathology reports from a single academic centre from August 2013 to September 2017. We compared the sensitivity, specificity, negative and positive predictive values, malignancy rates, and accuracy of two cytopathologists who evaluated thyroid nodules.Results:We included 287 fine needle aspirations of thyroid nodules in the study. Approximately one fifth (18.5%) of patients had surgery and the rate of malignancy was 40%. There was a similar frequency of use of all thyroid Bethesda system (TBS) categories with the exception of TBS 3 (8.0% and 21.2%, P = .01). As a consequence, the malignancy rate was different in TBS 3 category (40% vs 17%, P = .545).Conclusions:There are interobserver differences in the evaluation of thyroid nodules. Clinicians should be aware of such differences because they affect the malignancy rate in each TBS category.
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