BREAST CYTOPATHOLOGY

Special Types of Breast Carcinomas 115
Figure 4.36. Medullary carcinoma. Pleomorphic naked nuclei
with macronucleoli and rare background lymphocytes. Primary
breast carcinomas most often lack macronucleoli with the exception
of the rare medullary carcinoma and apocrine carcinoma. (Smear,
Diff-Quik.)
Figure 4.37. Medullary carcinoma. A syncytial fragment of pleomorphic
malignant cells. Few lymphocytes are visible closely adhering
to the fragment. There is a total lack of glandular differentiation
in these tumors. (Smear, Papanicolaou.)