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The summary of chromogranin and NPY expression results.
| Marker | N (%) |
|---|---|
| Chromogranin staining | |
| 1. Single-cell pattern | 57 (78.08) |
| Cluster pattern | 15 (20.55) |
| Diffuse pattern | 1 (1.37) |
| 2. High expression | 57 (78.08) |
| Low expression | 16 (21.92) |
| NPY | |
| Expression score | |
| 0 | 4 (5.48) |
| 1 | 25 (34.25) |
| 2 | 44 (60.27) |
| Expression in PNI | |
| Lower/equal | 27 (73.68) |
| Higher | 10 (26.32) |
GG, grade group; NPY, neuropeptide Y; PNI, perineural invasion.
