Mechanisms of syrinx formation have long attracted interest and speculation. Until recently, most believed that syringomyelia was caused by a forceful diversion of CSF from the fourth ventricle into the central canal of the spinal cord attributed to either obstruction of the outlets of the fourth ventricle (1) or the development of a pressure gradient between the intracranial and intraspinal co...

OBJECT Chiari malformation (CM) Type I is frequently associated with craniosynostosis. Optimal management of CM in patients with craniosynostosis is not well-established. The goal of this study was to report on a series of pediatric patients with both craniosynostosis and CM and discuss their management. METHODS The authors searched the medical records of 383 consecutive patients treated for ...

Introduction: Perimedullary arteriovenous fistulas (PMAVF) are defined as direct fistulous connections located on the pial surface of the spinal cord, between the anterior and/or posterior spinal arteries and the medullary veins, without any intervening nidus. PMAVFs constitute about 4% to 38% of all SCAVMs and are rare in children. The association of syringohydromyelia with low lying tethered ...

When patients with syringomyelia fail to improve after operation, factors such as incomplete cyst decompression or type of operation are often implicated. MRI has been used to confirm adequate syrinx decompression post-operatively and to compare the degree of collapse with the type of operation. Foramen magnum decompression was at least as effective in reducing cyst size as syringo-subarachnoid...