Tags: Disease.
Tarlov cysts also known as perineurial cysts are cerebrospinal-fluid-filled (CSF) sacs located in the spinal canal of the S1-to-S4 region of the spinal cord (much less often in the cervical thoracic or lumbar spine) and can be distinguished from other meningeal cysts by their nerve-fiber-filled walls. Tarlov cysts are defined as cysts formed within the nerve-root sheath at the dorsal root ganglion.
