<unk> s can be classified as follows: M6a (Erythroleukemia) 50% or more of all nucleated bone marrow cells are erythroblasts, dyserythropoiesis is prominent and 20% or more of the remaining cells (non-<unk>  are myeloblasts. M6b (Pure<unk>  leukemia) In rare cases the<unk>  lineage is the only obvious component of an acute leukemia; a myeloblast component is not apparent. The<unk>  component consists predominantly or exclusively of proerythroblasts and early basophilic erythroblasts. These cells may constitute 90% or more of the marrow elements. Despite this lack of myeloblasts, these cases should be considered acute leukemias. In a WHO proposal the blastic leukemias that are limited to the<unk>  series are designated pure<unk>  malignancies. M6c (Erythroleukemia and Pure<unk>  leukemia) Myeloblast- and proerythroblast-rich mixed variant.
Acute erythroid leukemia
Myeloid leukemia
Prolymphocytic leukemia
Acute megakaryoblastic leukemia
Lymphoid leukemia
T-cell leukemia
Leukemoid reaction
Acute myeloid leukemia