Spinal intradural Ewing's sarcoma metastasising to the brain.

Spinal intradural extramedullary Ewing's sarcoma is extremely rare in children. This case involves a 15-year-old boy with walking difficulties, successfully treated with total resection, confirmed by postoperative MRI. Following 20 months of being asymptomatic, he developed headaches due to obstructive hydrocephalus from a third ventricle lesion, which was biopsied and confirmed as Ewing's sarcoma. This case represents the third documented instance of brain metastasis from intradural extramedullary Ewing's sarcoma and first case through cerebrospinal fluid dissemination, as per our knowledge.