Table 1. Clinicopathological features and MYCN status in 275 NBs.
| Features | Number | MYCN-amplified | MYCN-unamplified |
|---|---|---|---|
| Sex | |||
| Male | 170 | 39 | 131 |
| Female | 105 | 20 | 85 |
| Age(months) | |||
| <18 | 124 | 20 | 104 |
| 18–60 | 102 | 33 | 69 |
| ≥60 | 49 | 6 | 43 |
| Grade of differentiation | |||
| Undifferentiated | 89 | 37 | 52 |
| Poorly differentiated | 163 | 22 | 141 |
| Differentiating | 23 | 0 | 23 |
| Histology | |||
| Favorable | 183 | 9 | 174 |
| Unfavorable | 92 | 50 | 42 |
| INSS stage | |||
| 1 | 44 | 1 | 43 |
| 2 | 9 | 1 | 8 |
| 3 | 62 | 11 | 51 |
| 4 | 143 | 45 | 98 |
| 4S | 17 | 1 | 16 |
| Risk group | |||
| Low | 55 | 1 | 54 |
| Intermediate | 54 | 0 | 54 |
| High | 166 | 58 | 108 |
| Primary site | |||
| Adrenal gland | 221 | 54 | 167 |
| Mediastinum | 40 | 2 | 38 |
| Others | 14 | 3 | 11 |
| Distant metastatic site | |||
| Bone | 109 | 28 | 81 |
| Bone marrow | 84 | 23 | 61 |
| Lymph node | 35 | 8 | 27 |
| Liver | 36 | 11 | 25 |
| Skin | 21 | 6 | 15 |
| Others | 49 | 19 | 30 |