Ependymoma
It is a subtype of glioma that is quite common in children compared to adults. Ependymal cells are a type of glial cell that line the ventricles of the brain, which are fluid-filled structures that drain cerebrospinal fluid. Ependymomas often contain calcifications and cysts. The ependymomas are usually classified in grades depending on how much the tumor cells are different from normal cells.
They account for up to 3% of brain tumors, and 30% of them are diagnosed in children younger than 3 years old. Most of them are located in the posterior fossa, near the cerebellum, and the symptoms they cause are strongly related to their location and how big they grow.
