👉 Ependymoma is a type of brain tumor that occurs in the ependyma, which is an outer layer of the ependymal cells (e.g., astrocytes and oligodendrocytes). Ependymomas are typically benign but can progress to become malignant if they grow rapidly or if they produce excessive amounts of new blood vessels. They are often found in the brain, spinal cord, and peripheral nervous system, although some cases may involve other parts of the
