ependymoma
Pronunciation: ep-en-DI-mo-ma
A type of brain tumor arising from ependymal cells that line the ventricular system and central canal of the spinal cord.
Full Definition
Ependymoma is a primary brain tumor that originates from ependymal cells, which are specialized glial cells lining the ventricular system of the brain and the central canal of the spinal cord. These tumors represent about 2-3% of all brain tumors and are more common in children than adults. Ependymomas are classified into different grades based on their histological features, with anaplastic ependymomas being the most aggressive form. They typically present with symptoms related to increased intracranial pressure or focal neurological deficits depending on their location. Treatment usually involves surgical resection followed by radiation therapy.
Usage
Usage note: Grade according to WHO classification system.
In Context
- "Histopathological analysis confirmed the diagnosis of WHO Grade III anaplastic ependymoma." — Pathology report
- "The patient underwent gross total resection of the posterior fossa ependymoma with good outcome." — Surgical report