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NCI Dictionary of Cancer Terms


acute lymphoblastic leukemia  listen  (uh-KYOOT LIM-foh-BLAS-tik loo-KEE-mee-uh)

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

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