TABLE 4.

Radiographic and Operative Findings (N = 28)

Vertebral abnormalities
 Bifid laminae overlying tract entry site17
 Block vertebrae3
 Scoliosis4
Intraoperative findings
 Tethered cords22
 Mass lesions14
  Lipoma8
  Dermoid3
  Epidermal inclusion cyst2
  Endodermal cyst1
 Arachnoid changes6
 CSF leaks from the sinus tract3
 Split cord malformation3
 Nerve root herniation into sinus tract2
  • CSF indicates cerebrospinal fluid.