Stage IV T Lymphoblastic Leukemia/Lymphoma

**Semantic type:** Neoplastic Process

**Definition:** Ann Arbor Classification: Stage IV: Diffuse or disseminated involvement of one or more extralymphatic organs, with or without associated lymph node involvement; or isolated extralymphatic organ involvement in the absence of adjacent regional lymph node involvement, but in conjunction with disease in distant site(s); or any involvement of the liver or bone marrow, or nodular involvement of the lungs(s).

**Synonyms:** - Precursor T-Lymphoblastic Lymphoma/Leukemia Stage IV - Stage IV Precursor T-Lymphoblastic Lymphoma/Leukemia - Stage IV T-Lymphoblastic Leukemia/Lymphoma