Breast fine‐needle aspiration samples reported as “proliferative breast lesion”: Clinical utility of the subcategory “proliferative breast lesion with atypia”

Abstract

Proliferative breast lesion with atypia was clinically significant because it was associated with a significantly increased likelihood of malignancy compared with proliferative breast lesion without atypia. Most of the malignancies had hypocellularity or low nuclear grade on the FNA smears. Fibroadenoma accounted for most of the benign lesions in both proliferative breast lesion and proliferative breast lesion with atypia.