Stage M4 Childhood Ependymoma by Toronto Guidelines v2

**Semantic type:** Neoplastic Process

**Definition:** Metastasis outside of the central nervous system. (Childhood cancer staging for population registries according to the Toronto Childhood Cancer Stage Guidelines - Version 2. Cancer Council Queensland and Cancer Australia: Brisbane, Australia; 2021.)

**Synonyms:** - Ependymoma M4 - M4 Childhood Ependymoma by Toronto Guidelines v2 - M4 Pediatric Ependymoma by Toronto Guidelines v2 - Stage M4 Pediatric Ependymoma by Toronto Guidelines v2