This information is provided by the National Institutes of Health (NIH) Genetic and Rare Diseases Information Center (GARD).
Subependymomas are slow-growing brain tumors that are usually benign. They are most often found in the fourth or lateral ventricles in the brain, but may occur in the spine. Symptoms depend on the tumor location. Some people do not have symptoms, while others may have headaches, changes in vision, and/or difficulty with balance. These symptoms are thought to be due to obstruction of cerebral spinal fluid (CSF) due to the tumor’s location. Most subependymomas are benign with a low recurrence rate. However, a few progress to anaplastic ependymoma (a faster growing tumor). The cause of subependymomas is not well understood. Surgery to remove the tumor is often curative.
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