A Descriptive Study of Reporting of breast Fine Needle Aspirationcytology Using International Academy of Cytology Yokohama System

Abstract

Background: The International Academy of Cytology (IAC) has established standardizedapproach for reporting breast FNAC by categorizing lesions in a five-tier system from C1 to C5. Materials and Methods: From May 2020 to April 2021, a descriptive cross-sectional study was conducted in the cytology section of the Department of Pathology, SMS Medical College, Jaipur. Results: The current study involved 335 cases of breast FNAC, with a maximum of 333 (99.40%) females and 2 (0.60%) males. Maximum cases were in the age range of 21-40 years. There were 79 (23.60%) cases in C1 (Insufficient) category, C2 (Benign) had 177 (52.80%) cases, C3 (Atypical) had 9 (2.70%) cases, C4 (Suspicious) had 16 (4.80%) cases, and C5 (Malignant) had 54 (16.10%) cases respectively. Fibroadenoma was the most prevalent benign lesion in our analysis, accounting for 45 of the 177 benign cases, whereas ductal carcinoma was the most common malignant lesion.In a total of 92 cases where histology was examined, 86 cases were found to be compatible with the cytological diagnosis. In a triple assessment, 103 (78.03%) of the 132 cases were concordant in the benign group, only 1 (12.50%) case showed concordance in the atypia category, and 21 (39.62%) of the 53 cases showed concordance in the suspicious or malignant category. The Risk Of Malignancy (ROM) was calculated as follows: inadequate 0%, benign 0%, atypia 0%, suspicious for malignancy 71.43%, and malignant 97.56% for each group. Conclusion: This system is a valuable tool for breast cancer patient diagnosis and care. It also simplifies clinical audits and aids in improved coordination between pathologists, hospitals, and institutes.