What Is Syringomyelia?

Question: What does syringomyelia mean?

Answer: It is the formation of a fluid-filled cavity/cyst (syrinx) within the spinal cord. Some cases are detected incidentally on MRI and are followed over time for growth and clinical findings. Syringomyelia is considered a rare condition; some studies report a frequency of about 8 per 100,000.

Question: With which conditions can syringomyelia be associated?

Answer: It may be associated with cranio-cervical junction disorders such as Chiari type I malformation. In some Chiari I patient groups, syringomyelia rates have been reported as high (e.g., over 60% in certain series).

If syringomyelia is detected, which follow-up questions are important?

  1. Is there new weakness in the arm/hand?
  2. Is there a marked change in temperature–pain sensation?
  3. Is there progressive numbness in the shoulder/back region?
  4. Is the syrinx size/length changing on MRI?

The follow-up plan is determined according to the underlying cause (e.g., Chiari, tumor, trauma) and clinical findings.