[Ann Arbor Classification: Stage I: Involvement of a single lymph node region (I); or localized involvement of a single extralymphatic organ or site in the absence of any lymph node involvement (IE) (Rare in Hodgkin lymphoma). - 2003 ( NCI )]
UMLS (NCI) C0854860Stage I Precursor T-Lymphoblastic Lymphoma/Leukemia