syringomyelia / hydromyelia

• congenital: 90% a/w Arnold-Chiari
• acquired: trauma, tumor, infection, hemorrhage

syringomyelia

dissection of CSF within cord

no ependymal lining

hydromyelia

dilatation of central canal

lined by ependyma

associated with
• myelomeningocele
• Arnold-Chiari malformation
• Dandy-Walker cyst
• Klippel-Feil syndrome
• neuropathic joint (most common cause in upper extremity)

© 2002, C.E. Kahn, Jr.
2002-04-18