Ann Arbor Stage I B Lymphoblastic Lymphoma

**Semantic type:** Neoplastic Process

**Definition:** 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).

**Synonyms:** - Precursor B-Lymphoblastic Lymphoma Stage I - Stage I B Lymphoblastic Lymphoma - Stage I B Lymphoblastic Lymphoma - Stage I B-Lymphoblastic Lymphoma - Stage I Precursor B-Lymphoblastic Lymphoma