Contrast-enhancement patterns of intramedullary astrocytomas
| Enhancement Pattern | WHO Grade | Total (n = 19) (%) | ||
|---|---|---|---|---|
| I (n = 3) (%) | II (n = 13) (%) | III (n = 3) (%) | ||
| None | 0 (0) | 4 (31) | 2 (67) | 6 (32) |
| Focal nodular | 1 (33) | 4 (31) | 0 (0) | 5 (26) |
| Patchy | 1 (33) | 2 (15) | 0 (0) | 3 (16) |
| Inhomogeneous diffuse | 1 (33) | 3 (23) | 1 (33) | 5 (26) |
| Homogeneous diffuse | 0 (0) | 0 (0) | 0 (0) | 0 (0) |