St. Jude Stage II Childhood Non-Hodgkin Lymphoma AJCC v8

**Semantic type:** Neoplastic Process

**Definition:** Stage II: A single tumor (extranodal) with regional node involvement. Two or more nodal areas on the same side of the diaphragm. Two single (extranodal) tumors with or without regional node involvement on the same side of the diaphragm. A primary gastrointestinal tract tumor, usually in the ileocecal area, with or without involvement of associated mesenteric nodes only. (from AJCC 8th Ed.)