label: B Acute Lymphoblastic Leukemia
label_lc: b acute lymphoblastic leukemia
description: The most frequent type of acute lymphoblastic leukemia.  Approximately 75% of cases occur in children under six years of age.  This is a good prognosis leukemia.  In the pediatric age group the complete remission rate is approximately 95% and the disease free survival rate is 70%.  Approximately 80% of children appear to be cured.  In the adult age group the complete remission rate is 60-85%.  (WHO, 2001)