Ads
related to: chiari malformation mri vs normal
Search results
Results From The WOW.Com Content Network
Other conditions sometimes causally associated with Chiari malformation include hydrocephalus, [49] syringomyelia, spinal curvature, tethered spinal cord syndrome, and connective tissue disorders [42] such as Ehlers–Danlos syndrome [50] and Marfan syndrome. Chiari malformation is the most frequently used term for this set of conditions.
Chiari malformation (CMI) is when the cerebellar tonsils push through the foramen magnum of the skull. CSF flow varies based on level of tonsil descent and type of Chiari malformation, so the MRI can also be helpful in deciding the type of surgery to be performed and monitoring progress. [ 8 ]
For 20% of patients, MRIs present as completely normal. [32] MRIs performed with the patient seated upright (vs. laying supine) are not better for diagnosing CSF leaks, [68] but are more than twice as effective at diagnosing cerebellar tonsillar ectopia, also known as Chiari malformation. [69]
It is frequently co-morbid with atlanto-axial joint instability, Chiari malformation, [3] or tethered spinal cord syndrome. The condition can be brought on by physical trauma , including whiplash , laxity of the ligaments surrounding the joint, or other damage to the surrounding connective tissue.
Although often considered a classic finding in multiple sclerosis, it can be caused by a number of conditions, including transverse myelitis, Behçet disease, [4] osteogenesis imperfecta, [5] trauma, radiation myelopathy, [6] vitamin B12 deficiency (subacute combined degeneration), compression of the spinal cord in the neck from any cause such ...
Obstruction to CSF flow and/or absorption can occur in hydrocephalus (blockage in ventricles or subarachnoid space at base of brain, e.g., by Arnold–Chiari malformation), extensive meningeal disease (e.g., infection, carcinoma, granuloma, or hemorrhage), or obstruction in cerebral convexities and superior sagittal sinus (decreased absorption).
Tethered cord syndrome (TCS) refers to a group of neurological disorders that relate to malformations of the spinal cord. [1] Various forms include tight filum terminale, lipomeningomyelocele, split cord malformations (diastematomyelia), occult, dermal sinus tracts, and dermoids.
Diastematomyelia is a "dysraphic state" of unknown embryonic origin, but is probably initiated by an accessory neurenteric canal (an additional embryonic spinal canal.).) This condition may be an isolated phenomenon or may be associated with other segmental anomalies of the vertebral bodies such as spina bifida, kyphoscoliosis, butterfly vertebra, hemivertebra and block vertebrae which are ...