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Immunohistochemical stains performed in the four tumor components.
| MGA | AMGA | MMPC | Apocrine PLCIS | |
|---|---|---|---|---|
| P63 | − | − | − | − |
| CK5/6 | − | − | − | − |
| SMA | − | − | − | − |
| Calponin | − | − | − | − |
| Laminin | + | + | − | − |
| S100 | + | + | + | − |
| AR | − | − | − | + |
| AMACR | − | − | − | + |
| ER | − | − | − | − |
| PR | − | − | − | − |
| HER-2 neu | 0 | 0 | 0 | 3+ |
| Ki67 | 5% | 10% | 70% | 10% |
| E-cadherin | + | + | + | − |
Abbreviations: MGA; microglandular adenosis, AMGA; atypical microglandular adenosis, MMPC; metaplastic matrix-producing carcinoma, PLCIS; pleomorphic lobular carcinoma in situ.
