Figure 5
From: Metastatic disease to the breast: the Washington University experience
Histological sections from a 35 year-old patient with bilateral palpable breast masses. A representative hematoxylin and eosin section of the left breast mass core needle biopsy specimen is shown at 600 × magnification. The tumor is composed of diffuse sheets of small polygonal cells with nuclear molding, scant cytoplasm, brisk apoptotic rate, and numerous mitoses. Tumor cells were negative for estrogen receptor, progesterone receptor, and Her2neu (slides not shown).