Extracentral nervous system metastases from medulloblastoma. A case report.

Medulloblastoma belongs to the group of highly malignant neuroepithelial tumours and is the commonest tumour in childhood (12-25 %) (1), but is rare in adults (0.4-1%) of all primary brain tumours) (1,2). Medulloblastomas usually arise in the posterior fossa and spread readily throughout the CSF, although 10-30% of patients develop extracentral nervous system metastases (2). We describe a 30-year-old woman presenting bone metastases from medulloblastoma located predominantly in the spine.