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Appraisal of cytohistomorphology of papillary carcinoma thyroid and its variants with evaluation of discrepant cases


 Department of Pathology, Sri Devaraj Urs Medical College, Kolar, Karnataka, India

Correspondence Address:
Hemalatha Anatharamiah,
Department of Pathology, Sri Devaraj Urs Medical College, Tamaka, Kolar, Karnataka
India
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/mjdrdypu.mjdrdypu_492_20

Background: Papillary carcinoma thyroid is the most commonly occurring thyroid neoplasm which can be diagnosed by its characteristic cytological features by fine-needle aspiration procedure. Due too few limitations in fine-needle aspiration cytology (FNAC) technique, there are false-positive and false-negative diagnoses in papillary carcinoma thyroid lesions. Aim: In our study, we would like to evaluate the accuracy of thyroid FNAC and to determine the reasons for cytopathological discrepancies. Materials and Methods: Two hundred and twenty-three cases were collected from archives of our Department of Pathology. Slides were retrieved for which cytohistopathology correlation differed and reviewed. Statistical analysis for False positive/ negative rates, positive predictive value, sensitivity and specificity were done. Results: For 170 cases, cytohistopathology correlation, 27 cases were discordant which accounted for 15.2% of false-negative rates. 87% sensitivity, 96.6% positive predictive value and 10.6% false positive were calculated. Conclusion: FNAC is a reliable screening procedure in spite of having few pitfalls. Awareness of these pitfalls, while reporting by cytopathologist can minimize false-positive and false-negative reporting on thyroid lesions.


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    -  Megalamane S
    -  Anatharamiah H
    -  B. R. Prasad C S
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