Figure 2

2A). Large nest of tumor infiltrating within breast parenchyma. Normal ducts are seen at the right of the image (H&E, 100×). 2B). The histology of the tumor (left half of image) is similar to that from the intestine. The malignant cells contain round to oval nuclei with vesicular chromatin, rare mitosis, and no necrosis (H&E, 400×).