Table of Contents
What is the most common intramedullary tumor in pediatric population?
Astrocytoma is the most common intramedullary tumor in this group, accounting for up to 60 percent. Controversy remains regarding the second-most common type of intramedullary tumor—whether it is ganglioglioma or ependymoma.
What is the most common presenting symptom of an intramedullary tumor?
The most common presenting symptom in patients with IMSCT is pain, which classically worsens at night when the patient is recumbent and can be diffuse or radicular in nature.
What is an intramedullary mass?
Primary intra-axial tumors are usually derived from neuroepithelial tissue, especially glial cells. This often leads to a classic intramedullary mass differential diagnosis of ependymoma or astrocytoma, which together constitute up to 70% of spinal cord tumors.
What is the most common intradural extramedullary tumor in children?
Meningiomas, schwannomas, and neurofibromas are the most common intradural-extramedullary lesions, while astrocytomas and ependymomas represent the majority of intramedullary tumors.
What is intramedullary and extramedullary?
Intramedullary intradural lesions are within the substance of the cord. Extramedullary lesions are located within the dural sac but exterior to the spinal cord.
What causes intradural extramedullary tumor?
Intradural extramedullary tumors are located inside the dura, but outside of the spinal cord. They might develop from nerve roots or from the inside surface of the dura mater. Meningiomas and nerve sheath tumors make up the majority of intradural extramedullary tumors. Both kinds of tumors are usually benign.
Do benign spinal tumors grow?
A meningioma is usually benign, but it can grow large enough to be life-threatening. Neurofibroma: This is a benign tumor that grows on nerves in your body, which can include nerves in your spinal column. Most neurofibromas occur in association with a genetic disorder.
What is intramedullary lesion?
What is intramedullary injection?
Intramedullary cord injection is a rare complication of cervical myelography. The mechanism of spinal cord injury appears to involve a combination of physical compression from the injected liquid and neurotoxicity of the contrast material.
What is extramedullary tumor?
An intradural extramedullary tumor is a spinal cord tumor that causes spinal cord compression — nerves in and around the spinal cord are compressed as the tumor grows in size. The vast majority of these tumors are benign and treated with surgery.