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An ependymoma is a tumor that arises from the ependyma, a tissue of the central nervous system. Usually, in pediatric cases the location is intracranial, while in adults it is spinal. The common location of intracranial ependymomas is the floor of the fourth ventricle. Rarely, ependymomas can occur in the pelvic cavity.
Syringomyelia is a generic term referring to a disorder in which a cyst or cavity forms within the spinal cord. Often, syringomyelia is used as a generic term before an etiology is determined. [ 3 ] This cyst, called a syrinx , can expand and elongate over time, destroying the spinal cord.
A syrinx can also develop in patients who have a spinal cord tumor, scarring due to previous spinal trauma, or no known predisposing factors. About 30% of people with a spinal cord tumor eventually develop a syrinx. Syringomyelia is a paramedian, usually irregular, longitudinal cavity.
Most symptoms from spinal tumors occur due to compression of the spinal cord as it plays a primary role in motor and sensory function. [13] The spinal cord is surrounded by three layers known as the spinal meninges. [13] These are the dura mater, arachnoid mater, and pia mater. Spinal cord tumors are classified based on their location within ...
336 Other diseases of spinal cord. 336.0 Syringomyelia and syringobulbia; 336.1 Vascular myelopathies; 336.2* Subacute combined degeneration of spinal cord (266.2, 281.0, 281.1 †) 336.3* Myelopathy in other diseases classified elsewhere; 336.8 Other myelopathy; 336.9 Unspecified diseases of spinal cord; 337 Disorders of the autonomic nervous ...
Spinal and bulbar muscular atrophy; Spinal cord injury; Spinal cord tumors; Spinal muscular atrophy; Spinal muscular atrophy with respiratory distress type 1 – see Distal spinal muscular atrophy type 1; Spinocerebellar ataxia; Split-brain; Steele–Richardson–Olszewski syndrome – see Progressive supranuclear palsy; Stiff-person syndrome ...
A nervous system tumor is a tumor that arises within the nervous system, either the central nervous system (CNS) or the peripheral nervous system (PNS). [1] [2] Nervous system primary tumors include various types of brain tumor and spinal tumors, such as gliomas, and meningiomas (of the CNS), and schwannomas (of the PNS) and can be either benign or malignant.
Other conditions sometimes causally associated with Chiari malformation include hydrocephalus, [50] syringomyelia, spinal curvature, tethered spinal cord syndrome, and connective tissue disorders [43] such as Ehlers–Danlos syndrome [51] and Marfan syndrome. Chiari malformation is the most frequently used term for this set of conditions.