Supratentorial Ependymoma

**Semantic type:** Neoplastic Process

**Definition:** A circumscribed ependymoma that arises from the supratentorial region of the brain. The diagnosis of supratentorial ependymoma should be made either when genetic analysis did not reveal a fusion gene involving ZFTA or YAP1 genes (not elsewhere classified -NEC) or when the genetic analysis was unsuccessful or not reported (not otherwise specified-NOS).