User Tools

Site Tools


filum_terminale

Filum terminale

The filum terminale is an anatomic structure at the end of the spinal cord.

The pia mater that surrounds the spinal cord, projects directly downward, forming a slender filament called the filum terminale, which connects the conus medullaris to the back of the coccyx. The tension that the filum terminale provides between the conus medullaris and the coccyx stabilizes the entire spinal cord.

Pathology

see Thickened filum terminale.

Neoplasms in the region of filum terminale are not uncommon. Myxopapillary ependymoma is the commonest tumor at this location. The differentials reported for this entity are nerve sheath tumor, meningioma, paraganglioma, intradural metastases, lymphoma, other varieties of ependymoma, subependymoma, astrocytoma, ganglioglioma, hemangioblastoma, and primitive neuroectodermal tumor (PNET). PNET may very rarely present as an intradural thoracolumbar mass.

Thoriya et al. present pre- and post-therapy magnetic resonance imaging (MRI) features of a patient with proven primary spinal primitive neuroectodermal tumor (PSPNET) of peripheral subtype 1)

The association of the epidermoid cyst of the filum terminale, intradural spinal lipoma, tethered cord, dermal sinus tract, and type I diastematomyelia in a child has been described 2).

see Filum terminale artery.

1)
Thoriya PJ, Watal P, Bahri NU, Rathod K. Primary spinal primitive neuroectodermal tumor on MR imaging. Indian J Radiol Imaging. 2015 Oct-Dec;25(4):459-63. doi: 10.4103/0971-3026.169451. PubMed PMID: 26752826; PubMed Central PMCID: PMC4693396.
2)
Ak H, Atalay T, Gülşen I. The association of the epidermoid cyst of the filum terminale, intradural spinal lipoma, tethered cord, dermal sinus tract, and type I diastematomyelia in a child. World Neurosurg. 2014 Dec;82(6):e836-7. doi: 10.1016/j.wneu.2014.08.040. Epub 2014 Aug 19. PubMed PMID: 25150211.
filum_terminale.txt · Last modified: 2018/02/26 19:04 by administrador