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A total of 71 core needle biopsies (CNBs) with flat epithelial atypia (FEA) were reviewed. Sixty-two percent (n=44) were excluded for presence of a separate surgical indication or lack of adequate excisional biopsy (EB). Pure FEA core needle biopsies were designated as “focal” or “prominent”. The focal FEA group contained no malignancies on excisional biopsy, compared to 33% (n=3) in the prominent group (0% v. 33%, p=0.02).
