List 11 differential diagnoses of an intramedullary lesion.

1. Ependymoma
2. Astrocytoma
3. Hemangioblastoma
4. Lipoma
5. Dermoid or epidermoid tumor
6. Metastasis
7. Syringomyelia
8. Hematoma
9. Inflammation (myelitis)
10. AVM
11. Infarct