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Standard classification criteria for acute leukemia derive from the morphologic, cytochemical, and immunophenotypic characterization of bone marrow specimens and are designed to identify optimal therapy and predict prognosis. On the basis of these criteria, most cases of acute leukemia can…
Classification of Precursor Lymphoid Neoplasms Precursor lymphoid neoplasms encompass acute lymphoblastic leukemias (ALLs) and lymphoblastic lymphomas (LBLs), generally of either B-cell or T-cell origin. The majority of ALLs are derived from precursor B cells, and the majority of LBLs possess…