Abstract
Background: FNAC is a commonly used diagnostic test for preoperative evaluation of thyroid swelling. However, FNAC reporting has its own limitations. The Bethesda classification system was created to guide cytopathological diagnoses and to help identify important correlations with malignancy in the final histological study. The present study was undertaken to correlate the FNAC findings in thyroid swellings using Bethesda grading with histopathology. Methodology: This is a prospective study design done in100 patients of thyroid nodules undergoing surgery. The findings of FNAC as per Bethesda grading and histopathology was correlated and the data analyzed statistically. Results: Fine Needle Aspiration Cytology using Bethesda gradinghad a sensitivity of 88.24% and specificity of 96.39%. The accuracy of FNAC was 95% positive predictive value was 83.33%and negative predictive value was 97.56%. Conclusion: FNAC using Bethesda grading in evaluation of thyroid nodule was extremely reliable with a high specificity 96.39% making it a reliable tool in the diagnosis of a thyroid swelling.
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