Spinal neurenteric cysts are rare congenital cysts of endodermal origin. A 34 years old man presented with burning feet syndrome of two years duration. Magnetic resonance imaging (MRI) revealed an intradural extramedullary cystic mass lesion extending from L2 to L5 vertebrae causing severe compression and displacement of terminal portion of conus medullaris and filum terminale to the right side...

PURPOSE The filum terminale (FT) is a fibrous band that connects the conus medullaris to the posterior body of the coccyx. Considering the advances of ultrasonography (US) technology and improvements in the resolution of US images, we aimed to re-establish the US features of the normal FT in infants younger than 6 months of age. METHODS We retrospectively reviewed 30 spinal US scans, stored a...

The development of a suitable animal model is important for clarifying the pathogenesis of tethered cord syndrome (TCS). This study was undertaken to develop a new animal model for investigating the pathogenesis and therapeutic strategies for TCS. A traction device, a filum terminale tractor, was designed exclusively for this experiment. A TCS model was produced in cats using the tractor to fix...

BACKGROUND Filum terminale (FT) is a structure that is intimately associated with conus medullaris, the most caudal part of the spinal cord. It is well documented that certain regions of the adult human central nervous system contains undifferentiated, progenitor cells or multipotent precursors. The primary objective of this study was to describe the distribution and progenitor features of this...

The cauda equina is composed of the lumbosacral and the coccygeal nerve roots and the filum terminale. In the embryonic period, discrepancy in development between the termination of the spinal cord and the spinal column results in elongation of the nerve roots as well as the filum terminale in this region. Although the vascular anatomy of the caudal spinal structure shares many common features ...

Symptoms often develop in patients due to an osseous septum dividing the spinal cord into two lateral halves [10]. Patients with “split cord malformation” (SCM) may have tethering from multiple causes such as myelomeningocele, intradural lipoma or fatty filum, associated with their congenital anomaly [11]. It is critical to consider the significance of the association between SCMs and other spi...

At 2 months of age, a radiograph of the spine was repeated, and a hemivertebra was demonstrated at the L5 level, as bowel shadows were less prominent (Fig 1). Magnetic resonance imaging (MRI) of the spine was performed to investigate spinal dysraphism at the age of 5 months (Fig 2). The conus was at L2/3 level, and there were no other associated findings of cord tethering (thickened filum, fila...

A schwannoma is a benign tumor arising from a schwann cell and occurs mainly in the nerve sheath in the intradural extramedullary region. Schwannomas have been well described as occurring in the lumbar spine, but total cystic degeneration of schwannomas is rarely reported. The authors describe the clinical and radiographic evaluations and treatment of a rare case of an intraextradural totally c...