Hydrosyringomyelia

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List of terms related to Hydrosyringomyelia

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

The term syringomyelia refers to any cavity within the substance of the spinal cord which may or may not communicate with the central canal (cavity wall is not lined by ependyma). The term hydromyelia refers to dilatation of the persistent central canal of the spinal cord which communicates with the fourth ventricle (cavity wall is lined by ependyma). The cavity in both lesions contains cerebrospinal-like fluid. The differentiation between hydromyelia and syringomyelia is at times difficult to make by radiological, clinical or pathological methods; therefore, the combined term, syringohydromyelia (or hydrosyringomyelia), can be used to avoid confusion.

Causes

• Primary or congenital (i.e Chiari I malformation).
• Acquired or secondary syringohydromyelia
  • Posttraumatic
  • Postinflammatory
  • Associated with spinal cord tumors
  • Vascular insufficiency

Diagnosis

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