Syrinx terminology

There are specific terms used when describing a syrinx or other cystic lesions within the spinal cord 1:

  • hydromyelia: fluid accumulation/dilatation within the central canal, therefore, lined by ependyma
  • syringomyelia: cavitary lesion within cord parenchyma, of any cause (there are many); located adjacent to the central canal, therefore not lined by ependyma
  • syringohydromyelia: term used for either of the above, since the two may overlap and cannot be discriminated on imaging, also known as hydrosyringomyelia
  • syringobulbia: extension of syringomyelia into the medulla oblongata, although used by some authors to refer to any syrinx in the brainstem
  • syringopontia: extension of syringomyelia into the pons
  • syringomesencephaly: extension of syringomyelia into the midbrain
  • syringocephalus: extension of syringomyelia into the cerebrum, also known as syringoencephalomyelia
  • syrinx: common name for the cavity in all of the above
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Article information

rID: 17461
Synonyms or Alternate Spellings:
  • Terminology of spinal cord cavities

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