Post contrast series:
There was an ovoid space-occupying lesion measuring 2 x 2.5 x 2.5 cm within the retrobulbar space of the left orbita displacing the globe rostromedially. The lesion showed moderate, non-uniform contrast enhancement with one central necrotic non-enhancing area. The lesion appeared to be centered around the optic nerve. The ipsilateral optic canal was mildly enlarged. The vessels within the optic canal were mildly displaced ventrolaterally by the potentially swollen optic nerve. The globe was macroscopically not infiltrated. There was mild pressure atrophy of the adjacent frontal bone. No aggressive bony lysis was seen. The left medial retropharyngeal lymph node was moderately enlarged in size with preserved short to long axis ratio and enhancement pattern.