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Summary of immunohistochemical findings
| IHC stains | Positive | Negative |
|---|---|---|
| Chromogranin | 8/11 | 3/11 |
| Synpatophysin | 11/11 | 0 |
| CD56 | 5/5 | |
| CD99 | 1/1 | |
| NSE | 1/1 | |
| Inhibin | 1/1 (weak) | |
| Glucagon | 2/2 | |
| Somatostatin | 1/1 | |
| Insulin | 4/4 | |
| Gastrin | 2/2 | |
| Pancreatic polypeptide | 2/2 | |
| P53 | 1/1 | |
| WT1 | 4/4 | |
| EMA | 2/2 | |
| Vimentin | 1/1 (focal) | |
| Myogenin | 1/1 | |
| Pankeratin | 1/3 (weak &focal) | 2/3 |
| LCA | 1/1 | |
| CK7 | 4/4 | |
| CK20 | 4/4 | |
| TTF1 | 2/2 | |
| CD10 | 1/2 | 1/2 |
| Renal cell marker | 1/1 | |
| S100 | 1/1 | |
| MIB1 | ||
| ≤2% | 3/5 | |
| ≥5% | 2/5 |
