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 |