Stage M3 Childhood Ependymoma by Toronto Guidelines v2

**Semantic type:** Neoplastic Process

**Definition:** Visible metastasis in spine or visible metastasis in cervicomedullary junction. (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 M3 - M3 Childhood Ependymoma by Toronto Guidelines v2 - M3 Pediatric Ependymoma by Toronto Guidelines v2 - Stage M3 Pediatric Ependymoma by Toronto Guidelines v2