syringomyelocele

sy·rin·go·my·e·lo·cele

(sĭ-ring'gō-mī'ĕ-lō-sēl),
A form of spina bifida, consisting of a protrusion of the membranes and spinal cord through a dorsal defect in the vertebral column. Fluid of the syrinx of the cord increases and expands the cord tissue into a thin-walled sac that itself then expands through the vertebral defect.
[syringo- + myelocele]

sy·rin·go·my·e·lo·cele

(si-ring'gō-mī'ĕ-lō-sēl)
A form of spina bifida cystica consisting of a protrusion of the meninges and spinal cord through a dorsal defect in the vertebral column, the fluid of the syrinx of the cord being increased and expanding the cord tissue into a thin-walled sac that then expands through the vertebral defect.
Mentioned in ?