| IHC panel | Result | Number | Positivity (%) |
| Chromogranin (n = 24) | Positive | 19 | 79.1 |
| Negative | 5 |
| |
| Synaptophysin (n = 22) | Positive | 20 | 90.9 |
| Negative | 2 |
| |
| CD 56 (n = 18) | Positive | 17 | 94.4 |
| Negative | 1 |
| |
| NSE (n = 2) | Positive | 1 | 50.0 |
| Negative | 1 |
|