This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Which is the most common childhood CNS tumor metastasize outside brain? 
Select and explain. 
A. Ependymoma, B. Glioblastoma multiforme, C. Choroid plexus tumor, D. Medulloblastoma
D: Medulloblastoma
Answer: D: Medulloblastoma 
Explanation: "Medulloblastoma is the childhood brain tumor that most commonly metastasizes extraneuronally."- Nelson 
Also know
There are age-related differences in primary location of tumor.