Bilateral symmetrical fusiform enlargement and kinking of the optic nerves indicating optic nerve glioma. It extends intracranially involving the optic chiasm, optic tracts and lateral thalami bilaterally. It is isointense on T1, hyperintense on T2 and FLAIR. The lesions demonstrate heterogeneous enhancement following IV contrast administration. No cystic component is seen within. The lesions are bright on DWI images. No blooming artifact on GRE to suggest calcification or microhaemorrhage.
Incidental findings of a small left temporal extra-axial arachnoid cyst.
Findings are suggestive of bilateral optic pathway gliomas (OPGs) involving optic nerves, optic chiasm, optic tracts and both lateral thalami.