T-lymphoblastic leukemia/lymphoma

< T-lymphoblastic leukemia
T-lymphoblastic leukemia/lymphoma
Other namesPrecursor T-cell lymphoblastic lymphoma, Precursor T acute lymphoblastic leukemia/lymphoma
SpecialtyHematology, oncology

T-lymphoblastic leukemia/lymphoma (WHO 2008),: 219  previously labeled precursor T-lymphoblastic leukemia/lymphoma (WHO 2001): 219  is a form of lymphoid leukemia and lymphoma in which too many T-cell lymphoblasts (immature white blood cells) are found in the blood, bone marrow, and tissues, particularly mediastinal lymph nodes.: 635  Labeling as leukemia or lymphoma depends on which feature is more pronounced in a given situation, but has no biological or treatment implication.: 635 

It is uncommon in adults, but represents 15% of childhood acute lymphoblastic leukemia and 90% of lymphoblastic lymphoma.: 635 

The 2008 terminology dropped "precursor" to avoid linguistic redundancy because the lymphoblast is an immature precursor cell by definition.: 219 

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