Figure 3
From: Interobserver reproducibility in the diagnosis of flat epithelial atypia of the breast
Flat epithelial atypia. (a) The dilated acini are lined by a few cell layers with no evidence of architectural complexity. The lumina contain flocculent secretions and minute calcifications. (b) The columnar cells, at high power, show low-grade cytologic atypia with rounded rather than ovoid nuclei. There is loss of orientation of the cells relative to the basement membrane. Apical snouts are present.
