[A neoplasm of lymphoblasts committed to the T-cell lineage, typically composed of small to medium-sized blast cells. When the neoplasm involves predominantly the bone marrow and the peripheral blood, it is precursor T lymphoblastic leukemia (T-cell acute lymphoblastic leukemia). When it involves nodal or extranodal sites it is T- lymphoblastic lymphoma. (WHO, 2001) — 2003 ( NCI )]
UMLS (NCI) C0854857Precursor T Lymphoblastic Lymphoma/Leukemia
Precursor T-Lymphoblastic Lymphoma/Leukemia