Table 3.
Histopathological Characteristics and Classification of Neuroblastoma Subgroups
| Subgroup I (n) | Subgroup II (n) | Subgroup III (n) | P Value* | |
|---|---|---|---|---|
| Histology | .0005 | |||
| Favorable | 13 | 9 | 6 | |
| Unfavorable | 4 | 7 | 24 | |
| Unknown | 6 | 2 | 3 | |
| Age at diagnosis | <.0001 | |||
| <18 months | 19 | 13 | 9 | |
| >18 months | 4 | 5 | 24 | |
| MYCN amplification | .0003 | |||
| No | 23 | 18 | 22 | |
| Yes | 0 | 0 | 11 | |
| MYCN expression | <.0001 | |||
| Low | 23 | 18 | 2 | |
| Medium | 0 | 0 | 20 | |
| High | 0 | 0 | 11 | |
| Stage | <.0001 | |||
| 1 | 9 | 3 | 1 | |
| 2 | 7 | 4 | 0 | |
| 3 | 2 | 1 | 5 | |
| 4 | 0 | 5 | 25 | |
| 4S | 5 | 5 | 1 | |
| Unknown | 0 | 0 | 1 | |
| COG risk score | <.0001 | |||
| Low | 21 | 13 | 2 | |
| Intermediate | 1 | 2 | 5 | |
| High | 0 | 3 | 25 | |
| Unknown | 1 | 0 | 1 |
*
P value determined by χ2 test.