precursor T-lymphoblastic lymphoma
(pree-KER-ser T-LIM-foh-BLAS-tik lim-FOH-muh)
A type of non-Hodgkin lymphoma in which too many T-cell lymphoblasts (immature white blood cells) are found in the lymph nodes and spleen. It is most common in young men. Also called T-lymphoblastic lymphoma.