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Immunohistochemical profiles of papillary neoplasm and perihilar cholangiocarcinoma
| Papillary neoplasm | Perihilar cholangiocarcinoma | |
| MUC1 | + | ++ |
| MUC2 | - | - |
| MUC5AC | + | +++ |
| MUC6 | +++ | - |
| p53 | + | + |
| Ki67 | 20% | 30% |
| CK7 | +++ | +++ |
| CK20 | - | - |
| S100P | - | ++ |
| ER | - | - |
| PgR | - | - |
