Also known as: Precursor cell lymphoblastic leukemia (morphologic abnormality) / Precursor Cell Lymphoblastic Leukemia-Lymphoma / Acute lymphoblastic leukemia not having achieved remission / Acute lymphoblastic leukemia [ALL] / Acute lymphoblastic leukaemia / Leukemia lymphoblastic acute / Acute lymphoblastic leukemia / Lymphoid leukaemia, acute / Acute lymphoid leukaemia / Lymphoid leukemia, acute / Acute lymphoid leukemia, disease (disorder) / Leukaemia lymphoblastic acute / Acute lymphocytic leukemia / Acute lymphatic leukaemia / Acute lymphoid leukemia / Leukaemias acute lymphocytic / Acute lymphatic leukemia / Acute lymphocytic leukaemia / Leukemia, Lymphocytic, Acute, L2