Presentation
Leukocoria and abnormal findings on fundoscopy.
Patient Data
MR findings demonstrate right intraocular mass within the posterior inferior aspect of the right globe at the level of the retina, which is T1 mildly hyperintense and T2 hypointense relative to vitreous.
There is post-contrast heterogeneous enhancement within the mass.
No extraocular extension, optic nerve, and meningeal sheath invasion.
Mild subretinal hemorrhage is best seen at T2WI.
The left orbit appears normal.
Case Discussion
Retinoblastoma is the most common malignant intraocular tumor of childhood.
The diagnosis of retinoblastoma is usually made by fundoscopy and the US.
CT best for demonstrating calcifications.
MRI best for extraocular extensions, tumor infiltration of the optic nerve, and intracranial disease.