Question

a tubular cavity in the spinal cord that may develop following spinal cord injury that produces dissociated anesthesia with a cape - like distribution initially, but eventually leads to quadriplegia.
epidural abscess
lambert - eaton syndrome
syringomyelia
acute spinal cord syndrome
poliomyelitis

Explanation:

Syringomyelia is a condition where a fluid - filled cavity forms in the spinal cord. After spinal cord injury, it can cause dissociated anesthesia with a cape - like distribution initially and may progress to quadriplegia. Epidural abscess is an infection in the epidural space. Lambert - Eaton syndrome is a neuromuscular disorder. Acute spinal cord syndrome is a more general term for sudden spinal cord problems but doesn't specifically match the described cavity and symptoms. Poliomyelitis is a viral disease affecting the spinal cord anterior horn cells.

Answer:

C. Syringomyelia