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NCI Dictionary of Cancer Terms

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T-cell acute lymphocytic leukemia  listen  (T-sel uh-KYOOT LIM-foh-SIH-tik loo-KEE-mee-uh)

  An aggressive (fast-growing) type of leukemia (blood cancer) in which too many T-cell lymphoblasts (immature white blood cells) are found in the bone marrow and blood. Also called precursor T-lymphoblastic leukemia and T-cell acute lymphoblastic leukemia.