Fig. 3.
Liver metastases of colonic adenocarcinoma with massive necrosis (a, arrows) and isolated neoplastic aggregates (a, inside the box) strongly positive for CDX2 (nuclear positivity; b, inside the box) and CK20 (cytoplasmatic positivity; c, inside the box). a Hematoxylin and eosin; original magnification ×80. b CDX2 immunostain; original magnification ×80. c CK20 immunostain; original magnification ×80