2021 Volume 60 Issue 4 Pages 205-211
Objective : We studied the cytological characteristics of flat epithelial atypia (FEA) in fine needle aspiration cytology (FNAC).
Study Design : We selected 5 cases of FEA diagnosed at the Osaka Breast Clinic in 2019.
Results : The cytological diagnoses included 3 cases labeled as “indeterminate” and 2 cases labeled as “suspicious for malignancy.” We observed a clear cytological background in almost all the cases and calcified material in 3 cases. All cases showed clusters of monotonous cells. Columnar cells with large N/C ratios showed a palisading arrangement in 3 cases and were found as scattered cells in 4 cases.
Conclusion : Our observation showed that we could recommend core needle biopsy for the diagnosis of FEA with FNA. We think that it will become possible to diagnose FEA by FNA through accumulation of more cases.
