The minimum, maximum, mean, and standard deviation of ADC value of retinoblastoma in relation to prognostic parameters
| Prognostic Parameter | ADC Value | P Value |
|---|---|---|
| Pathologic grade | ||
| Well differentiated (n = 16) | 0.54 ± 0.20 (0.41–0.86) | 0.007* |
| Moderately differentiated (n = 20) | 0.51 ± 0.07 (0.33–0.70) | |
| Poorly differentiated (n = 7) | 0.44 ± 0.07 (0.23–0.57) | |
| Undifferentiated (n = 29) | 0.41 ± 0.01 (0.20–0.59) | |
| Size | ||
| Small (less than 10 mm; n = 11) | 0.55 ± 0.09 (0.36–0.72) | 0.015* |
| Medium (10–15 mm; n = 36) | 0.48 ± 0.08 (0.34–0.57) | |
| Large (more than 15 mm; n = 25) | 0.38 ± 0.11 (0.20–0.86) | |
| Side | ||
| Unilateral (n = 49) | 0.53 ± 0.11 (0.34–0.86) | 0.001* |
| Bilateral (n = 23) | 0.35 ± 0.11 (0.20–0.51) | |
| Growth pattern | ||
| Endophytic (n = 18) | 0.49 ± 0.16 (0.23–0.72) | 0.640 |
| Exophytic (n = 19) | 0.49 ± 0.11 (0.25–0.70) | |
| Combined (n = 35) | 0.46 ± 0.15 (0.20–0.86) | |
| Choroidal invasion | ||
| Choroidal invasion (n = 34) | 0.48 ± 0.13 (0.20–0.86) | 0.661 |
| No invasion (n = 38) | 0.47 ± 0.15 (0.23–0.84) | |
| Optic nerve invasion | ||
| Postlaminar (n = 8) | 0.38 ± 0.11 (0.20–0.55) | 0.003* |
| Prelaminar (n = 15) | 0.39 ± 0.23 (0.25–0.60) | |
| No invasion (n = 49) | 0.52 ± 0.10 (0.40–0.86) |
↵* indicates significant P values.