Assessment of Risk of Malignancy by Application of the Proposed IAC–IARC–WHO Cytopathology System for Classification and Reporting of Soft Tissue Lesions: An Experience From Tertiary Care Center From India
Mukund Sable, M. Shameema Farween, Pritinanda Mishra, Suvendu Purkait, Pavithra Ayyanar, Amit Kumar Adhya, Madhusmita Sethy, Susama Patra
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Abstract
Introduction
Soft tissue lesions encompass a diverse category of diseases from benign to malignant, and their morphology might overlap; therefore, accurate categorization is needed to approach the reporting of soft tissue cytology. The cytology of these lesions is helpful in detecting the features of malignancy, which helps in guiding further management. In this study, we applied the proposed IAC–IARC–WHO cytopathology system to assess the risk of malignancy (ROM) and diagnostic accuracy (DA) for the determination of its clinical and diagnostic utility.
Methods and Materials
This was a 5-year retrospective study of fine needle aspirations (FNA) of soft tissue, which were categorized according to the proposed IAC–IARC–WHO system. Cytological diagnoses were correlated with the corresponding histopathological diagnoses to assess diagnostic accuracy and ROM for each diagnostic category and to evaluate the diagnostic utility of FNAC by analyzing the sensitivity, specificity, and accuracy.
Results
A total of 1509 FNAC cases of soft tissue lesions were classified under the proposed six categories of the IAC–IARC–WHO system. Final histology was compared with cytology in 250 cases. Considering malignant diagnosis as a positive result, the overall sensitivity, specificity, and accuracy of FNAC were found to be 58.14%, 99.03%, and 92%, respectively. ROM was calculated in each category, which had a wide range from 7.6% to 100%.
Conclusion
We have validated the IAC–IARC–WHO system for soft tissue cytology and found it to be effective with the sensitivity and specificity results. FNA categorization is helpful for better communication between cytopathologists and clinicians, ensuring better reproducibility, which is crucial for guiding further diagnostic workup and surgical management.
期刊介绍:
Diagnostic Cytopathology is intended to provide a forum for the exchange of information in the field of cytopathology, with special emphasis on the practical, clinical aspects of the discipline. The editors invite original scientific articles, as well as special review articles, feature articles, and letters to the editor, from laboratory professionals engaged in the practice of cytopathology. Manuscripts are accepted for publication on the basis of scientific merit, practical significance, and suitability for publication in a journal dedicated to this discipline. Original articles can be considered only with the understanding that they have never been published before and that they have not been submitted for simultaneous review to another publication.