<unk>  <unk>  is an uncommon type of<unk>  which arises in multipotent progenitor cells which have the ability to differentiate into both myeloid and lymphoid lineages. It is a subtype of "leukemia of ambiguous lineage". The direct reasons leading to<unk>  are still not clear.<unk>  can be de novo or secondary to previous cytotoxic therapy. Many factors, such viruses, hereditary factors, and radiation, might have a relationship with<unk> .<unk>  is hard to treat. Usually the chemotherapy is chosen according to the morphology of the blast (ALL or AML). A blood-forming stem-cell transplantation is highly recommended. About 5% of<unk><unk>  cases are<unk> .<unk>  can occur in all ages of people but occurs more in adults than in children.
Biphenotypic acute leukaemia
Aggressive NK-cell leukemia
Mixed-phenotype acute leukemia
Leukemoid reaction
Atypical chronic myeloid leukemia
Prolymphocytic leukemia
T-cell prolymphocytic leukemia
B-cell prolymphocytic leukemia