Synonyms : B and T Cell Acute Lymphoblastic Leukemia, B and T Cell Leukemia, Acute, Leukemia, Lymphocytic, Acute, Mixed Cell, Leukemia, Mixed, B and T Cell, Lymphocytic Leukemia, Acute, B and T Cell, Leukemia, Mixed Cell, Leukemias, Mixed-Cell, Mixed-Cell Leukemia