Fig. 2
From: Rectal cancer diagnosed after resection of isolated brain metastasis
a Hematoxylin and eosin staining (200×), b Caudal type homeobox 2 (CDX2) (400×), c Cytokeratin (CK) 7 (200x), d CK20 (400×). These results suggest metastasis from rectal cancer, because immunohistochemical analysis detected CK20 and CDX2 but not CK7