Differential diagnosis of pediatric posterior fossa brain tumors


Approach to the differential diagnosis of posterior fossa brain tumors:

  • In children 0-3 years they are centered around fourth ventricle
    Brainstem glioma is anterior to the fourth ventricle
    Cerebellar astrocytoma is lateral to the fourth ventricle
    Medulloblastoma is in the fourth ventricle, has restricted diffusion on MRI
    Ependymoma is in the fourth ventricle, does not have restricted diffusion on MRI