Childhood Acute Lymphoblastic Leukemia CNS-Positive Toronto Guidelines v2

**Semantic type:** Neoplastic Process

**Definition:** Clinical signs of CNS involvement or blasts in CSF. (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:** - Childhood Acute Lymphoblastic Leukemia Central Nervous System-Positive Toronto Guidelines v2 - Pediatric Acute Lymphoblastic Leukemia CNS-Positive Toronto Guidelines v2 - Pediatric Acute Lymphoblastic Leukemia Central Nervous System-Positive Toronto Guidelines v2