Leukemia, Lymphocytic, Acute

Adult Acute Lymphocytic Leukemia; Acute Lymphoblastic Leukemia; Acute Lymphoblastic Leukemias; Acute Lymphocytic Leukemia; Acute Lymphocytic Leukemias; Leukemia, Acute Lymphoblastic; Leukemia, Acute Lymphocytic; Leukemias, Acute Lymphoblastic
Lymphocytic leukemia where cells show little differentiation. There are three major subgroups (FAB L1, L2, & L3) based on distinguishing characteristics of the blast cells. Adult and childhood forms of the disease show biological differences as well.