Spine

Question 1

Posterior Cord Hyperintense Signal

Answer 1

1) B12 deficiency
2) Cu deficiency
3) HTLV-1 myelopathy
4) Viral myelitis
5) Transverse myelitis

Question 2

Intramedullary Tumor

Answer 2

1) Non-Neoplastic
- Acute trauma
- Syrinx
- Myelitis
- Demyelinating dz
- Vascular (AVM, cavernoma…)
- Infection
- Congenital lipoma
2) Neoplastic
- Astrocytoma
- Ependymoma
- Hemangioblastoma
- Subependymoma
- Mets
- Oligodendroglioma
- Ganglioglioma

Question 3

Intradural-Extramedullary Tumor

Answer 3

1) Non-Neoplastic
- Meningitis
- Arachnoiditis
- Dermoid cyst
- Epidermoid cyst
- Neurenteric cyst
2) Neoplastic
- Schwannoma/Neurofibroma
- Meningioma
- Lipoma
- Myxopapillary ependymoma
- Mets
- Paraganglioma

Question 4

Extradural

Answer 4

1) Non-Neoplastic
- Degenerative dz
- OM-Discitis
- Paget’s
- Epidural hematoma
- Epidural lipomatosis
- Extramedullary hematopoiesis
2) Neoplastic
- Hemangioma
- ABC
- OO/Osteoblastoma
- Chordoma
- Plasmacytoma
- Chondrosarcoma
- Osteosarcoma
- Lymphoma