T lymphoblastic leukemia/lymphoma

Definition

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 called T acute lymphoblastic leukemia. When it involves nodal or extranodal sites it is called T lymphoblastic lymphoma. (WHO, 2001)

Also known as precursor T lymphoblastic leukemia/lymphoma, precursor T lymphoblastic lymphoma/leukemia, precursor T-lymphoblastic lymphoma/leukemia — per MONDO

Also identified as

• DOID 5599 per MONDO
• NCIT C8694 per MONDO
• UMLS C1301359 per MONDO

Affected Organs