Ann Arbor Stage I Primary Mediastinal Large B-Cell 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:** - Ann Arbor Stage I Primary Mediastinal (Thymic) Large B-Cell Lymphoma - Primary Mediastinal Large B-Cell Lymphoma Stage I - Stage I Mediastinal (Thymic) Large B-Cell Lymphoma - Stage I Mediastinal (Thymic) Large B-Cell Lymphoma - Stage I Primary Mediastinal Large B-Cell Lymphoma