From: High Resolution MR Imaging guidelines in retinoblastoma: prospective study correlated with histopathological results
Finding at histopathology analysis
Prevalance (%)
Mean tumor diameter (mm)
Range
p value
Postlaminar optic nerve invasion
.002
No
31 (53.4)
15
(6-20)
Yes
27 (46.6)
19
(13–40)
Choroidal invasion
.007
15 (25.9)
14
(6-19)
43 (74)
18
(10–40)