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Immunohistochemical findings.
| Case | CK7 | CK19 | CK20 | CDX2 | MUC1 | MUC2 | MU5AC | MUC6 | β-catenin | CD10 | E-cad |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | − | + | − | − | − | − | +/− | + | − | − | − |
| 2 | − | − | + | + | − | + | − | − | − | − | − |
| 3 | +/− | + | − | − | + | − | +/− | +/− | − | + | − |
| 4 | + | + | − | − | + | − | + | + | + | − | + |
| 5 | + | + | − | − | + | − | + | + | + | − | + |
| 6 | + | + | − | − | +/− | − | + | − | − | − | − |
| 7 | + | + | − | − | +/− | − | + | − | + | − | + |
| 8 | − | + | − | − | − | + | + | − | − | − | − |
CK, cytokeratin; CDX2, caudal-related homeobox transcription factor 2; MUC, mucin; E-cad, E-cadherin; −, negative; +, positive; +/−, focal positive.
