KRT7 and breast carcinoma: Two paraoesophageal lymph nodes contained adenocarcinoma with appearances compatible with metastases from the oesophageal primary, and which on immunohistochemistry were positive for the epithelial marker cytokeratin 7 (CK7) but negative for oestrogen receptor [Figure 1] and gross cystic disease fluid protein-15 (GCDFP-15), both of which are breast carcinoma related molecules.