Definition

One of a group of rare tumors that begin in nerve cells of the brain or spinal cord. There are many different types of neuronal tumors, and they can occur in different parts of the brain or spinal cord. Most neuronal tumors are not cancer and tend to grow slowly. However, they can grow and press on nearby brain tissue, which can cause seizures, a buildup of fluid and increased pressure in the brain, and other problems. Neuronal tumors can occur at any age but are more common in children and young adults.