Low power view of the metastatic colorectal carcinoma which has a loose glandular pattern with extracellular mucin production (A; ×2, scale bar 1 mm, H&E) in contrast to the more solid and partly papillary high grade serous endometrial carcinoma (E; ×2, scale bar 1 mm, H&E). Immunohistochemistry shows that the colorectal metastasis is CK20+ (B; ×10, scale bar 200 µm), CK7+ (C; ×10, scale bar 200 µm) and CA125− (D; ×10, scale bar 200 µm). The endometrial carcinoma by contrast is CK20− (F; ×10, scale bar 200 µm), CK7+ (G; ×10, scale bar 200 µm) and CA125+ (H; ×4, scale bar 500 µm).