Stage I Childhood Hodgkin Lymphoma by Toronto Guidelines v2

**Semantic type:** Neoplastic Process

**Definition:** Involvement of a single lymph node region or involvement of a single extra-lymphatic organ or site, without lymph node involvement. This definition applies to both tiers (tier 1 and 2). (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:** - Hodgkin lymphoma Stage I - Stage I Pediatric Hodgkin Lymphoma by Toronto Guidelines v2