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Breast metastasis

Breast cancer with colon metastasis
Figure 1: Hematoxylin and eosin stain at 200x magnification showed light microscopy image showing malignant tumour cells dispersed throughout lamina propria of large intestine (yellow arrow), some of which were present in a simple file strands. The image showed fragments of colonic mucosa with no ulcer of dysplasia (red arrow). In further studies, the malignant cells are positive for CK7 and ER (3+, in 90% cells). They are negative for CK20, PR, leucocyte common antigen, TTF-1 and e-cadherin.