neurologic disorders
Spinal Tumors
Intramedullary tumors
The most common intramedullary tumors are gliomas, particularly ependymomas and low-grade astrocytomas. Intramedullary tumors infiltrate the parenchyma and expand rather than displace the spinal cord. Intramedullary tumors may extend over multiple spinal cord segments and obstruct the flow of cerebrospinal fluid within the cord, resulting in a peritumoral Syrinx of the Spinal Cord or Brain Stem . 