A Clinical Update and Radiologic Review of Pediatric Orbital and Ocular Tumors
Figure 1
17 months old diagnosed with bilateral retinoblastoma requiring systemic chemotherapy. Axial contrast-enhanced CT through the orbits (a) demonstrates bilateral intraocular masses with coarse calcifications (arrows) and mild-to-moderate enhancement, diagnostic of retinoblastoma. MR axial T2-weighted image with fat-saturation (b) demonstrates curvilinear hypointensities in both globes, best visualized on the right, consistent with retinal detachment (arrows). Axial T1-weighted fat-saturated (c) and postcontrast T1-weighted fat-saturated (d) images show the bilateral intraocular masses with abnormal signal and enhancement in the intraconal left orbit along the optic nerve (curved arrow), which may represent a combination of postlaminar spread of tumor along the optic nerve and secondary perineuritis. This is not apparent on the CT scan.
