Table 2.
Immunohistochemical findings.
| Antibodies | Dilution and company | Results (Epithelial component) | Results (Stromal component) |
|---|---|---|---|
| Cytokeratin AE1/AE3 | 1/100 (DakoCytomation) | Positive | Negative |
| CK7 | 1/50 (Novocastra) | Positive | Negative |
| Cytokeratin 8/18 (CAM5.2) | 1/100 (DakoCytomation) | Positive | Negative |
| CK19 | 1/50 (Novocastra) | Positive | Negative |
| EMA | 1/200 (DakoCytomation) | Positive | Negative |
| CEA | prediluted (DakoCytomation) | Negative | Negative |
| P53 | 1/50 (DakoCytomation) | Negative | Negative |
| Ki-67 | 1/200 (DakoCytomation) | Positive (1%) | Positive (1%) |
| Vimentin | 1/50 (DakoCytomation) | Negative | Positive |
| α-smooth muscle actin | 1/50 (DakoCytomation) | Negative | Positive |
| Desmin | 1/100 (DakoCytomation) | Negative | Negative |
| Calretinin | 1/100 (DakoCytomation) | Negative | Negative |
| HBME-1 | 1/100 (DakoCytomation) | Negative | Negative |
| Beta-catenin | 1/200 (Novocastra) | Negative | Negative |