Pediatric Radiology > Neurological > Posterior Fossa Tumors > Cerebellar Astrocytoma


Cerebellar Astrocytoma

The most common posterior fossa tumor is an astrocytoma, typically a low-grade pilocytic type. Imaging can be variable, but the lesions are usually well defined with anterior displacement of the fourth ventricle. Lesions can be cystic with an enhancing mural nodule or solid with heterogeneous enhancement. Lesions typically do not demonstrate calcification or hemorrhage.

   
Head CT
   
MRI T2-weighted
   
Post contrast MRI
   


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