|E||Ependymoma||Spreads around structures "toothpaste tumor"|
|A||Astrocytoma (pilocytic)||Most common (85%), usually eccentric with a cystic component|
|M||Medulloblastoma||Midline, compresses cerebellum|
Conversely, of all the intracranial astrocytomas, 60% of them occur in the posterior fossa. All of these tumors (except brainstem glioma) can have "drop metastases" to the spinal cord, so it is important to image the spine if such a mass is encountered.
|Hemorrhagic pilocytic astrocytoma|