68-year-old male with gradually worsening lower extremity weakness, sensory disturbances, and gait difficulties.
What is the most likely diagnosis?
- Intramedullary neoplasm
- Longitudinally extensive transverse myelitis
- Spinal cord infarction
- Spinal dural arteriovenous fistula
Answer

Dr. Shayan Sirat M. Anwar | Aga Khan University Hospital, Karachi