Journal of Cytology
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Reproducibility of the “International academy of cytology yokohama system for reporting breast cytology” – A retrospective analysis of 70 cases

 Department of Pathology, Burdwan Medical College, West Bengal University of Health Sciences, West Bengal, India

Correspondence Address:
Arghya Bandyopadhyay,
Department of Pathology, Burdwan Medical College, Burdwan – 713 104, West Bengal
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/joc.joc_203_21

Background: Fine-needle aspiration cytology (FNAC) is the most practiced initial method for evaluation of breast lesions. The International Academy of Cytology Yokohama System for Reporting Breast (IAC YSRB) Fine-Needle Aspiration Biopsy Cytopathology has been developed to standardize the reporting system. However, literature available on the inter-observer reproducibility of 5 IAC YSRB categories is limited. Aim: We investigated the inter-observer reproducibility of the IAC YSRB system. Method and Materials: A total of 70 consecutive specimens obtained from FNAC of breast lesions were reviewed retrospectively by 3 experienced cytopathologists who allotted 1 to 5 IAC YSRB categories. Results: The percent overall agreement between observers was 70.48% and the free marginal kappa was 0.63, which signifies substantial agreement. After combining “Suspicious” and “Malignant” categories, overall agreement was 80.95% and free marginal kappa became 0.75. Conclusions: Inter-observer agreement of three (70.48%) cytopathologists was substantial. Agreement can be improved by combining certain categories, especially “Suspicious” and “Malignant”. Technical quality limitation plays a significant role in a proportion of cases, mainly the “Atypical” and “Suspicious of malignancy” categories. Application of the IAC YSRB system in day-to-day practice will increase the inter-observer agreement.

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    -  Boler AK
    -  Roy S
    -  Chakraborty A
    -  Bandyopadhyay A
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