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Table 1 Immunohistochemistry of the two tumors (Dako®)

From: Two synchronous malignant tumors of the pancreas: a case report

Stain

Cytokeratin 7

Cytokeratin 20

Carcinoembryonic antigen

Epithelial membrane antigen

Tumor 1 (ampulla)

Strongly positive

Negative

Focally positive

Strongly positive

Tumor 2 (tail of pancreas – colloid carcinoma)

Strongly positive

Focally positive

Strongly positive

Strongly positive