from 923 breast cancers sent in for hormone receptor determination , 745 diagnostically utilizable pappenheim-stained biopsy smears at 500-fold magnification were classified into eight atypia groups ( 1-4 without nucleoli , 5-8 with nucleoli ) visually in terms of the severity of the cellular malignancy criteria .
C0006142
breast cancers
C0334227
cellular malignancy