Indian Journal of Pathology and Oncology


Cytomorphological spectrum of thyroid lesions using Bethesda system of reporting with Histopathological correlation: A study of 87 cases


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Article Type : Research Article

Author Details: Pooja Agarwal,Surbhi Dahiya*,Asbah Shams

Volume : 6

Issue : 3

Online ISSN : 2394-6792

Print ISSN : 2394-6784

Article First Page : 454

Article End Page : 459


Abstract

Introduction: The primary objective of evaluation of the thyroid lesions by FNAC is to distinguish the majority of benign from malignant lesions. To standardize the reporting system for thyroid FNA, NCI hosted a multidisciplinary Thyroid State of the Science Conference in Bethesda, in October 2007, providing a uniform and pertinent reporting nomenclature.
Aim and Objectives: To assess the effectiveness of FNAC by using Bethesda system of reporting in the evaluation of thyroid lesions.
Materials and Methods: This study included smears from all thyroid FNACs performed over a period of 6 months. FNA smears were reported according to the 6 diagnostic categories of TBSRTC. We could pursue follow up histology for 24 cases. The diagnosis offered in FNAC was compared with that observed on histopathology.
Results: We received 87 cases, out of which 9 were males and 78 were females with male to female ratio of 1:8.6. Benign lesions constituted 74.7% and malignant lesions 4.6%. Bethesda category I included 4.6% cases, category II 74.7% cases, category III 3.4% cases, category IV 10.3% cases, category V 2.3% cases and category VI 4.6% cases. Category I had no follow up cases, so the rate of malignancy could not be assigned. On histopathological examination, the rate of malignancy of category II was 6.6%, category III 50%, category IV 66.6%, category V 100% and category VI 100%.

Conclusion: The Bethesda System is a very useful and reproducible system of reporting thyroid cytopathology and also guides the clinicians for consistent management approach thereby preserving the credibility of reporting.

Keywords: Bethesda reporting, Colloid goiter, Thyroid FNAC.

Doi :-https://doi.org/10.18231/j.ijpo.2019.087