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Immunohistochemistry
| Parameter | Value |
|---|---|
| Ki67 | 3% |
| Atypia | Slight |
| SMA | + |
| EMA | – |
| PAX8 | + |
| Caldesmon | + |
| CD34 | – |
| S100 | +/– |
| CK | – |
| Desmin | + |
| ALK1 | – |
ALK1 – anaplastic lymphoma kinase 1; CK – cytokeratin; EMA – epithelial membrane antigen; SMA – smooth muscle actin
