There is a syringohydromyelia in the cervical and upper dorsal spinal cord with expansion of the cervical spinal cord seen.
There is a large defect seen in the posterior bony elements of the lumbar spine from L1–L5 with the meninges and CSF protruding through the defect (myelomeningocele).
There is evidence of diastematomyelia and tethering of the spinal cord.