Childhood Central Nervous System Embryonal Tumor by Toronto Guidelines v2 Stage, Tier 1

**Semantic type:** Neoplastic Process

**Definition:** A term that refers to the staging of childhood central nervous system embryonal tumor according to the tier 1 Toronto childhood cancer staging guidelines v2.

**Synonyms:** - Pediatric Central Nervous System Embryonal Tumor by Toronto Guidelines v2 Stage, Tier 1