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NCI Dictionary of Cancer Terms


childhood acute lymphoblastic leukemia risk group system  listen  (... uh-KYOOT LIM-foh-BLAS-tik loo-KEE-mee-uh risk groop SIS-tem)

  A way of grouping patients that is used to plan treatment for children with acute lymphoblastic leukemia. A risk group is based on the patient’s age and white blood cell count at diagnosis. Risk groups are described as either standard (low) risk or high risk. Other factors that affect the risk group include the type of leukemia cells, whether there are certain chromosome changes, and how quickly the leukemia responds to treatment.